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2016版《一点一练》高考数学(理科)专题演练:第八章 解析几何(含两年高考一年模拟)

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of dev el opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on ac cide nts, safety for thre e cons ecutive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur di oxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

第八章 解析几何 考点 26 直线与圆

两年高考真题演练 1.(2015· 广东)平行于直线 2x+y+1=0 且与圆 x2+y2=5 相切的 直线的方程是( )

A.2x-y+ 5=0 或 2x-y- 5=0 B.2x+y+ 5=0 或 2x+y- 5=0 C.2x-y+5=0 或 2x-y-5=0 D.2x+y+5=0 或 2x+y-5=0 2.(2015· 新课标全国Ⅱ)过三点 A(1,3),B(4,2),C(1,-7)的 圆交 y 轴于 M、N 两点,则|MN|=( A.2 6 C.4 6 B.8 D.10 )

3.(2015· 山东)一条光线从点(-2,-3)射出,经 y 轴反射后与圆 (x+3)2+(y-2)2=1 相切,则反射光线所在直线的斜率为( 5 3 3 2 A.-3或-5 B.-2或-3 5 4 4 3 C.-4或-5 D.-3或-4 4.(2015· 重庆)已知直线 l:x+ay-1=0(a∈R)是圆 C:x2+y2- 4x-2y+1=0 的对称轴,过点 A(-4,a)作圆 C 的一条切线,切点为 B,则|AB|=( )
Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

)

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leaka ge, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect, w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system , a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

A.2 B.4 2 C.6 D.2 10 5.(2014· 福建)已知直线 l 过圆 x2+(y-3)2=4 的圆心,且与直线 x+y+1=0 垂直,则 l 的方程是( A.x+y-2=0 B.x-y+2=0 C.x+y-3=0 D.x-y+3=0 6.(2014· 浙江)已知圆 x2+y2+2x-2y+a=0 截直线 x+y+2=0 所得弦的长度为 4,则实数 a 的值是( A.-2 B.-4 C.-6 D.-8 7.(2014· 江西)在平面直角坐标系中,A,B 分别是 x 轴和 y 轴上 的动点,若以 AB 为直径的圆 C 与直线 2x+y-4=0 相切,则圆 C 面 积的最小值为( 4π A. 5 C.(6-2 5)π ) 3π B. 4 5π D. 4 ) )

8.(2014· 四川)设 m∈R,过定点 A 的动直线 x+my=0 和过定点 B 的动直线 mx-y-m+3=0 交于点 P(x,y),则|PA|· |PB|的最大值是 ________. 9. (2014· 山东)圆心在直线 x-2y=0 上的圆 C 与 y 轴的正半轴相 切,圆 C 截 x 轴所得弦的长为 2 3,则圆 C 的标准方程为________. 10.(2014· 陕西)若圆 C 的半径为 1,其圆心与点(1,0)关于直线
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

y=x 对称,则圆 C 的标准方程为________. 11.(2014· 江苏)在平面直角坐标系 xOy 中,直线 x+2y-3=0 被 圆(x-2)2+(y+1)2=4 截得的弦长为________. 12.(2014· 大纲全国)直线 l1 和 l2 是圆 x2+y2=2 的两条切线.若 l1 与 l2 的交点为(1,3),则 l1 与 l2 的夹角的正切值等于________. 13.(2014· 湖北)直线 l1:y=x+a 和 l2:y=x+b 将单位圆 C:x2 +y2=1 分成长度相等的四段弧,则 a2+b2=________. 14.(2014· 重庆)已知直线 ax+y-2=0 与圆心为 C 的圆(x-1)2 +(y-a)2=4 相交于 A,B 两点,且△ABC 为等边三角形,则实数 a =________.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 26

直线与圆

一年模拟试题精练 1.(2015· 北京海淀模拟)已知直线 l1:ax+(a+2)y+1=0,l2:x+ ay+2=0.若 l1⊥l2,则实数 a 的值是( A.0 B.2 或-1 ) D.-3

C.0 或-3

2. (2015· 山东省实验中学期末)已知倾斜角为 α 的直线 l 与直线 x -2y+2=0 平行,则 tan 2α 的值为( 4 A.5 4 B.3 3 C.4 ) 2 D.3

3. (2015· 河南天一大联考)已知圆 C: (x+1)2+y2=r2 与抛物线 D: y2=16x 的准线交于 A,B 两点,且|AB|=8,则圆 C 的面积为( A.5π B.9π C.16π D.25π )

4.(2015· 四川遂宁模拟)圆心在原点且与直线 y=2-x 相切的圆 的方程为________. 5.(2015· 德州模拟)已知直线 3x-y+2=0 及直线 3x-y-10 =0 截圆 C 所得的弦长均为 8,则圆 C 的面积是________. 6.(2015· 浙江金丽模拟)设直线 ax+2y+6=0 与圆 x2+y2-2x+ 4y=0 相交于点 P,Q 两点,O 为坐标原点,且 OP⊥OQ,则实数 a 的值为________. 7.(2015· 山师大附中模拟)已知直线 l:3x+y-6=0 和圆心为 C 的圆 x2+y2-2y-4=0 相交于 A,B 两点,则线段 AB 的长度等于 ________.
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

8.(2015· 山东烟台模拟)已知圆 C:(x-4)2+(y-3)2=1 和两点 A(-m,0),B(m,0)(m>0),若圆 C 上至少存在一点 P,使得∠APB =90°,则 m 的取值范围是________. 9.(2015· 湖北荆门模拟)由直线 y=x+1 上的点向圆(x-3)2+(y +2)2=1 引切线,则切线长的最小值为________. 10.(2015· 山东济南模拟)已知圆 C 过点(-1,0),且圆心在 x 轴 的负半轴上,直线 l:y=x-1 被该圆所截得的弦长为 2 2,则过圆心 且与直线 l 垂直的直线方程为________.

11.(2015· 山东日照模拟)圆 O 的半径为 1,P 为圆周上一点,现 将如图放置的边长为 1 的正方形(实线所示,正方形的顶点 A 与点 P 重合)沿圆周逆时针滚动,点 A 第一次回到点 P 的位置,则点 A 走过 的路径的长度为________. 12.(2015· 四川遂宁模拟)已知定点 A(-2,0),F(1,0),定直线 1 l: x=4, 动点 P 与点 F 的距离是它到直线 l 的距离的2.设点 P 的轨迹 为 C,过点 F 的直线交 C 于 D、E 两点,直线 AD、AE 与直线 l 分别 相交于 M、N 两点. (1)求 C 的方程; (2)以 MN 为直径的圆是否恒过一定点?若是,求出定点坐标; 若不是,请说明理由.
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 27

椭 圆

两年高考真题演练 x2 y2 1.(2014· 大纲全国)已知椭圆 C: 右焦点为 a2+b2=1(a>b>0)的左, 3 F1, F2, 离心率为 3 , 过 F2 的直线 l 交椭圆 C 于 A, B 两点. 若△AF1B 的周长为 4 3,则椭圆 C 的方程为( x2 y2 A. 3 + 2 =1 x2 y2 C.12+ 8 =1 )

x2 2 B. 3 +y =1 x2 y2 D.12+ 4 =1
2 2

x2 2.(2014· 福建)设 P,Q 分别为圆 x +(y-6) =2 和椭圆10+y2= 1 上的点,则 P,Q 两点间的最大距离是( A.5 2 B. 46+ 2 C.7+ 2 D.6 2 x2 y2 3. (2014· 辽宁)已知椭圆 C: 点 M 与 C 的焦点不重合. 若 9 + 4 =1, M 关于 C 的焦点的对称点分别为 A,B,线段 MN 的中点在 C 上,则 |AN|+|BN|=________. y2 4. (2014· 安徽)设 F1, F2 分别是椭圆 E: x +b2=1(0<b<1)的左,
2

)

右焦点,过点 F1 的直线交椭圆 E 于 A,B 两点,若|AF1|=3|F1B|,AF2 ⊥x 轴,则椭圆 E 的方程为________.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

1 x2 y2 5. (2014· 江西)过点 M(1, 1)作斜率为-2的直线与椭圆 C: a2+b2 =1(a>b>0)相交于 A,B 两点,若 M 是线段 AB 的中点,则椭圆 C 的离心率等于________. 6.(2015· 浙江)

x2 2 1 已知椭圆 2 +y =1 上两个不同的点 A,B 关于直线 y=mx+2对 称. (1)求实数 m 的取值范围; (2)求△AOB 面积的最大值(O 为坐标原点).

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

x2 y2 7.(2014· 新课标全国Ⅱ)设 F1,F2 分别是椭圆 C:a2+b2=1(a> b>0)的左,右焦点,M 是 C 上一点且 MF2 与 x 轴垂直.直线 MF1 与 C 的另一个交点为 N. 3 (1)若直线 MN 的斜率为4,求 C 的离心率; (2)若直线 MN 在 y 轴上的截距为 2,且|MN|=5|F1N|,求 a,b.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 27

椭 圆

一年模拟试题精练 x2 y2 1.(2015· 山东省聊城模拟)过椭圆a2+b2=1(a>b>0)的左焦点 F1 作 x 轴的垂线交椭圆于点 P,F2 为右焦点,若∠F1PF2=60°,则椭 圆的离心率为( 2 A. 2 ) 3 B. 3 1 C.2 1 D.3

x2 y2 2.(2015· 江西师大模拟)设椭圆方程为a2+b2=1(a>b>0),右焦点 F(c,0)(c>0),方程 ax2+bx-c=0 的两实根分别为 x1,x2,则 P(x1, x2)必在( )

A.圆 x2+y2=2 内 B.圆 x2+y2=2 外 C.圆 x2+y2=1 上 D.圆 x2+y2=1 与圆 x2+y2=2 形成的圆环之间 3.(2015· 湖北黄冈模拟)在等腰梯形 ABCD 中,E,F 分别是底边 AB,CD 的中点,把四边形 AEFD 沿直线 EF 折起后所在的平面记为 α,P∈α ,设 PB,PC 与 α 所成的角分别为 θ1,θ 2(θ1,θ 2 均不为 0).若 θ1=θ2,则点 P 的轨迹为( A.直线 B.圆 ) D.抛物线

C.椭圆

x2 4.(2015· 江西重点联盟模拟)已知焦点在 x 轴上的椭圆方程为4a
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

y2 + 2 =1,随着 a 的增大该椭圆的形状( a -1 A.越接近于圆 C.先接近于圆后越扁 B.越扁

)

D.先越扁后接近于圆

5.(2015· 河北唐山模拟)在区间[1,5]和[2,4]上分别取一个数, x2 y2 3 记为 a,b,则方程a2+b2=1 表示焦点在 x 轴上且离心率小于 2 的椭 圆的概率为( )

1 15 17 31 A.2 B.32 C.32 D.32 x2 y2 6.(2015· 安徽江南十校模拟)椭圆a2+b2=1(a>b>0)上任意一点 P 1 到两焦点的距离之和为 6 ,且椭圆的离心率为 3 ,则椭圆方程为 ________. x2 y2 7.(2015· 江苏淮安模拟)已知椭圆a2+b2=1(a>b>0),点 A,B1, B2,F 依次为其左顶点、下顶点、上顶点和右焦点,若直线 AB2 与直 a2 线 B1F 的交点恰在直线 x= c 上,则椭圆的离心率为________. x2 y2 8.(2015· 河南信阳模拟)已知椭圆 C:a2+b2=1(a>b>0)的焦距为 4,其长轴长和短轴长之比为 3∶1. (1)求椭圆 C 的标准方程; (2)设 F 为椭圆 C 的右焦点,T 为直线 x=t(t∈R,t≠2)上纵坐标 不为 0 的任意一点,过 F 作 TF 的垂线交椭圆 C 于点 P,Q.若 OT 平

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

分线段 PQ(其中 O 为坐标原点),求 t 的值.

考点 28

双曲线

两年高考真题演练 x2 y2 1.(2015· 福建)若双曲线 E: 9 -16=1 的左、右焦点分别为 F1, F2,点 P 在双曲线 E 上,且|PF1|=3,则|PF2|等于( A.11 B.9 C.5 D.3 )

2.(2015· 安徽)下列双曲线中,焦点在 y 轴上且渐近线方程为 y =± 2x 的是(
2

) x2 2 B. 4 -y =1 x2 D.y - 4 =1
2 2

y2 A.x - 4 =1 y2 2 C. 4 -x =1

y2 3. (2015· 四川)过双曲线 x - 3 =1 的右焦点且与 x 轴垂直的直线, 交该双曲线的两条渐近线于 A,B 两点,则|AB|=( 4 3 A. 3 B.2 3 C.6 D.4 3 x2 y2 5 4.(2015· 广东)已知双曲线 C:a2-b2=1 的离心率 e=4,且其右 焦点为 F2(5,0),则双曲线 C 的方程为( x2 y2 x2 y2 A. 4 - 3 =1 B.16- 9 =1 x2 y2 x2 y2 C. 9 -16=1 D. 3 - 4 =1
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

)

)

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

x2 2 5.(2015· 新课标Ⅰ全国)已知 M(x0,y0)是双曲线 C:2 -y =1 上 → ·MF → <0,则 y 的取值范围 的一点,F1,F2 是 C 的两个焦点,若MF 1 2 0 是(
? ?

) A.?- 3 3? ? , 3 3? B.?-
? ?

3 3? ? , 6 6?

? 2 2 2 2? ? C.?- 3 , 3 ? ?

? 2 3 2 3? ? D.?- 3 , 3 ? ?

x2 y2 6.(2014· 天津)已知双曲线a2-b2=1(a>0,b>0)的一条渐近线 平行于直线 l:y=2x+10,双曲线的一个焦点在直线 l 上,则双曲线 的方程为( )

x2 y2 x2 y2 A. 5 -20=1 B.20- 5 =1 3 x2 3 y2 3 x2 3 y2 C. 25 -100=1 D.100- 25 =1 7.(2014· 湖北)已知 F1,F2 是椭圆和双曲线的公共焦点,P 是它 π 们的一个公共点,且∠F1PF2= 3 ,则椭圆和双曲线的离心率的倒数 之和的最大值为( )

4 3 2 3 A. 3 B. 3 C.3 D.2 x2 y2 8.(2014· 广东)若实数 k 满足 0<k<9,则曲线25- =1 与曲 9 -k x2 y2 线 - =1 的( 25-k 9 )

A.焦距相等 B.实半轴长相等

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

C.虚半轴长相等 D.离心率相等 9.(2014· 新课标全国Ⅰ)已知 F 为双曲线 C:x2-my2=3m(m>0) 的一个焦点,则点 F 到 C 的一条渐近线的距离为( A. 3 B.3 C. 3m D.3m 10.(2014· 湖北)设 a,b 是关于 t 的方程 t2cos θ +tsin θ =0 的 x2 两个不等实根,则过 A(a,a ),B(b,b )两点的直线与双曲线 2 - cos θ
2 2

)

y2 =1 的公共点的个数为( sin2θ A.0 B.1 C.2 D.3

)

x2 y2 11.(2015· 山东)平面直角坐标系 xOy 中,双曲线 C1:a2-b2= 1(a>0,b>0)的渐近线与抛物线 C2:x2=2py(p>0)交于点 O,A,B. 若△OAB 的垂心为 C2 的焦点,则 C1 的离心率为________. y2 2 12.(2014· 北京)设双曲线 C 经过点(2,2),且与 4 -x =1 具有相 同渐近线,则 C 的方程为________;渐近线方程为________. x 2 y2 13.(2014· 浙江)设直线 x-3y+m=0(m≠0)与双曲线a2-b2=1(a >0, b>0)的两条渐近线分别交于点 A, B.若点 P(m, 0)满足|PA|=|PB|, 则该双曲线的离心率是________.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 28

双曲线

一年模拟试题精练 x2 y2 1.(2015· 山东潍坊模拟)如果双曲线a2-b2=1(a>0,b>0)的一条 渐近线与直线 3x-y+ 3=0 平行,则双曲线的离心率为( A. 2 B. 3 C.2 D.3 2.(2015· 山东日照模拟)已知抛物线 y2=2px(p>0)上一点 M(1, x2 2 m)(m>0)到其焦点的距离为 5,双曲线 a -y =1 的左顶点为 A,若双 曲线的一条渐近线与直线 AM 平行,则实数 a 的值是( 1 1 1 1 A.9 B.25 C.5 D.3 x2 y2 3.(2015· 山东青岛模拟)已知双曲线a2-b2=1(a>0,b>0)的一条 渐近线平行于直线 l:x+2y+5=0,双曲线的一个焦点在直线 l 上, 则双曲线的方程为( ) ) )

x2 y2 x2 y2 A.20- 5 =1 B. 5 -20=1 3 x2 3 y2 x2 y2 C. 25 -100=1 D.100-25=1 x2 y2 4.(2015· 河南开封模拟)已知 a>b>0,椭圆 C1 的方程为a2+b2= x2 y2 3 1, 双曲线 C2 的方程为a2-b2=1, C1 与 C2 的离心率之积为 2 , 则 C1,C2 的离心率分别为( )
Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

1 2 6 6 1 A.2,3 B. 2 , 2 C. 4 ,2 D.4,2 3 x2 y2 5.(2015· 山东菏泽一模)设双曲线m+ n =1 的离心率为 2,且一 个焦点与抛物线 x2=8y 的焦点相同,则此双曲线的方程为( x2 2 x2 y2 A. 3 -y =1 B. 4 -12=1 x2 x2 y2 C.y - 3 =1 D.12- 4 =1
2

)

6.(2015· 山东济南一模)点 A 是抛物线 C1:y2=2px(p>0)与双曲 x2 y2 线 C2:a2-b2=1(a>0,b>0)的一条渐近线的交点,若点 A 到抛物线 C1 的准线的距离为 p,则双曲线 C2 的离心率等于( A. 2 B. 3 C. 5 D. 6 y2 x2 7.(2015· 甘肃河西五地模拟)已知 F2,F1 是双曲线a2-b2=1(a> 0,b>0)的上,下焦点,点 F2 关于渐近线的对称点恰好落在以 F1 为 圆心,|OF1|为半径的圆上,则双曲线的离心率为( A.3 B. 3 C.2 D. 2 8.(2015· 江西师大模拟)双曲线 C 的左,右焦点分别为 F1,F2, 且 F2 恰为抛物线 y2=4x 的焦点,设双曲线 C 与该抛物线的一个交点 为 A,若△AF1F2 是以 AF1 为底边的等腰三角形,则双曲线 C 的离心 率为( ) ) )

A. 2 B.1+ 2 C.1+ 3 D.2+ 3 x2 y2 9.(2015· 山东淄博模拟)过双曲线a2-b2=1(a>0,b>0)的左焦点
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

F1,作圆 x2+y2=a2 的切线交双曲线右支于点 P,切点为 T,PF1 的中 点 M 在第一象限,则以下结论正确的是( )

A.b-a<|MO|-|MT| B.b-a>|MO|-|MT| C.b-a=|MO|-|MT| D.b-a=|MO|+|MT| x2 y2 10. (2015· 湖南一模)过双曲线a2-b2=1(a>0, b>0)的左焦点 F(- c,0)作圆 x2+y2=a2 的切线,切点为 E,延长 FE 交抛物线 y2=4cx → =1(OF → +OP → ),则双曲线的离心率为 于点 P,O 为坐标原点,若OE 2 ( ) 1+ 5 1+ 3 5 A. 2 B. 2 C. 2 D. 5 x2 y2 11.(2015· 山东日照模拟)若双曲线a2-32=1(a>0)的离心率为 2, 则 a=________. x2 y2 12.(2015· 河北唐山模拟)若双曲线a2-b2=1(a>0,b>0)的一个焦 1 点到一条渐近线的距离等于焦距的4,则该双曲线的离心率为 ________.

13.(2015· 山东青岛模拟)如图:正六边形的两个顶点为某双曲线 的两个焦点,其余四个顶点都在该双曲线上,则该双曲线的离心率为

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

________.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 29

抛物线

两年高考真题演练 1.(2015· 浙江)如图,

设抛物线 y2=4x 的焦点为 F, 不经过焦点的直线上有三个不同的 点 A,B,C,其中点 A,B 在抛物线上,点 C 在 y 轴上,则△BCF 与△ACF 的面积之比是( |BF|-1 A. |AF|-1 |BF|+1 C. |AF|+1 ) |BF|2-1 B. |AF|2-1 |BF|2+1 D. |AF|2+1

x2 y2 2.(2015· 天津)已知双曲线a2-b2=1(a>0,b>0)的一条渐近线 过点(2, 3) ,且双曲线的一个焦点在抛物线 y2=4 7x 的准线上, 则双曲线的方程为( x2 y2 A.21-28=1 x2 y2 C. 3 - 4 =1 ) x2 y2 B.28-21=1 x2 y2 D. 4 - 3 =1

3.(2015· 四川)设直线 l 与抛物线 y2=4x 相交于 A,B 两点,与 圆(x-5)2+y2=r2(r>0)相切于点 M, 且 M 为线段 AB 的中点, 若这样 的直线 l 恰有 4 条,则 r 的取值范围是(
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

)
Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

A.(1,3) B.(1,4) C.(2,3) D.(2,4) 4.(2014· 新课标全国Ⅰ)已知抛物线 C:y2=x 的焦点为 F,A(x0, 5 y0)是 C 上一点,|AF|=4x0,则 x0=( A.1 B.2 C.4 D.8 1 5.(2014· 安徽)抛物线 y=4x2 的准线方程是( A.y=-1 B.y=-2 C.x=-1 D.x=-2 6.(2014· 新课标全国Ⅱ)设 F 为抛物线 C:y2=3x 的焦点,过 F 且倾斜角为 30°的直线交 C 于 A,B 两点,则|AB|=( 30 A. 3 B.6 C.12 D.7 3 7.(2014· 辽宁)已知点 A(-2,3)在抛物线 C:y2=2px 的准线上, 过点 A 的直线与 C 在第一象限相切于点 B,记 C 的焦点为 F,则直 线 BF 的斜率为( ) ) ) )

1 2 3 4 A.2 B.3 C.4 D.3 8.(2015· 陕西)若抛物线 y2=2px(p>0)的准线经过双曲线 x2-y2 =1 的一个焦点,则 p=________ 9. (2014· 大纲全国)已知抛物线 C:y2=2px(p>0)的焦点为 F,直 5 线 y=4 与 y 轴的交点为 P,与 C 的交点为 Q,且|QF|=4|PQ|. (1)求 C 的方程; (2)过 F 的直线 l 与 C 相交于 A,B 两点,若 AB 的垂直平分线 l′
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

与 C 相交于 M,N 两点,且 A,M,B,N 四点在同一圆上,求 l 的 方程.

考点 29

抛物线

一年模拟试题精练 1.(2015·河北唐山一模)已知抛物线的焦点 F(a,0)(a<0),则抛物 线的标准方程是( A.y2=2ax C.y2=-2ax ) B.y2=4ax D.y2=-4ax

2.(2015· 北京石景山模拟)在平面直角坐标系 xOy 中,抛物线 x2 =2py(p>0)上纵坐标为 1 的点到焦点的距离为 3,则焦点到准线的距 离为( A.2 ) B.8 C. 3 D.4

x2 y2 3. (2015· 山东莱芜模拟)已知双曲线a2-b2=1 的焦点到其渐近线 的距离等于 2,抛物线 y2=2px 的焦点为双曲线的右焦点,双曲线截 抛物线的准线所得的线段长为 4,则抛物线方程为( A.y2=4x C.y2=8 2x B.y2=4 2x D.y2=8x )

1 4. (2015· 山东青岛模拟)已知抛物线 y=ax2 的准线方程为 y=-2, 则实数 a=________.
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

5.(2015· 北京西城模拟)若抛物线 C:y2=2px 的焦点在直线 x+ 2y-4=0 上,则 p=________;C 的准线方程为________. 3 5 x2 6.(2015· 山东实验中学模拟)已知离心率为 5 的双曲线 C:a2- y2 2 = 1( a >0) 的左焦点与抛物线 y = mx 的焦点重合,则实数 m = 4 ________. 7.(2015· 湖北黄冈模拟)过抛物线 C:x2=2y 的焦点 F 的直线 l 交抛物线 C 于 A,B 两点,若抛物线 C 在点 B 处的切线斜率为 1,则 线段|AF|=________. 8.(2015· 安徽江南十校模拟)已知抛物线 C:x2=2y 的焦点为 F. (1)设抛物线上任一点 P(m,n),求证:以 P 为切点与抛物线相切 的切线方程是 mx=y+n; (2)若过动点 M(x0, 0)(x0≠0)的直线 l 与抛物线 C 相切,试判断直 线 MF 与直线 l 的位置关系,并予以证明.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

9.(2015· 江西重点中学模拟)已知

抛物线 C:x2=2py(p>0)的焦点为 F,过 F 的直线 l 交抛物线 C 于点 A,B,当直线 l 的倾斜角是 45°时,AB 的中垂线交 y 轴于点 Q(0,5). (1)求 p 的值; ︵ (2)以 AB 为直径的圆交 x 轴于点 M,N,记劣弧MN的长度为 S, S 当直线 l 绕 F 旋转时,求|AB|的最大值.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

考点 30

圆锥曲线的综合问题

两年高考真题演练 x2 y2 1.(2015· 山东)在平面直角坐标系 xOy 中,已知椭圆 C:a2+b2= 3 1(a>b>0)的离心率为 2 ,左、右焦点分别是 F1,F2.以 F1 为圆心以 3 为半径的圆与以 F2 为圆心以 1 为半径的圆相交,且交点在椭圆 C 上. (1)求椭圆 C 的方程; x2 y2 (2)设椭圆 E:4a2+4b2=1,P 为椭圆 C 上任意一点,过点 P 的 直线 y=kx+m 交椭圆 E 于 A,B 两点,射线 PO 交椭圆 E 于点 Q. |OQ| (ⅰ)求 |OP| 的值; (ⅱ)求△ABQ 面积的最大值.

x2 2.(2015· 新课标全国Ⅰ)在直角坐标系 xOy 中,曲线 C:y= 4 与 直线 l:y=kx+a(a>0)交于 M,N 两点,
activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主 Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

(1)当 k=0 时,分别求 C 在点 M 和 N 处的切线方程; (2)y 轴上是否存在点 P, 使得当 k 变动时, 总有∠OPM=∠OPN? 说明理由.

x 2 y2 3.(2014· 新课标全国Ⅰ)已知点 A(0,-2),椭圆 E:a2+b2=1(a 3 2 3 >b>0)的离心率为 2 , F 是椭圆 E 的右焦点, 直线 AF 的斜率为 3 , O 为坐标原点. (1)求 E 的方程; (2)设过点 A 的动直线 l 与 E 相交于 P,Q 两点,当△OPQ 的面 积最大时,求 l 的方程.

4.(2014· 山东)已知抛物线 C:y2=2px(p>0)的焦点为 F,A 为 C 上异于原点的任意一点,过点 A 的直线 l 交 C 于另一点 B,交 x 轴的 正半轴于点 D,且有|FA|=|FD|.当点 A 的横坐标为 3 时,△ADF 为正 三角形. (1)求 C 的方程; (2)若直线 l1∥l,且 l1 和 C 有且只有一个公共点 E. ①证明直线 AE 过定点,并求出定点坐标;

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt mechanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of great risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on -line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformatio n pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se co nd pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work procedures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manager system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maintenance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ec utive years to mai ntain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grade four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise construction took new ste ps. -The tw o "management system" for improveme nt. Focus on pr omoting the power of the compa ny management system a nd the applicati on a nd implementati on of the safety loop five-star manageme nt system, improve t he safety management system, reali ze the system of safety control . Further reg ulate se curity routine s, safety supervisi on a nd manag ement netw ork role to play to achieve clos ed -loop. Stre ngthening the supervisi on a nd management of ha bitual vi olation of, strengthe ning t he safety supervisi on of outs ourci ng contract ors. Carried out in spring a nd a utumn of security ins pecti ons, flood control a nd i nspecti on, safety pr oduction mont h, day s upervision of pr oduction safety and the Olympic G ames and other

②△ABE 的面积是否存在最小值?若存在, 请求出最小值; 若不 存在,请说明理由.

activities, compre hensive and tamping Safety Foundati on .. . Troubleshooti ng, manageme nt m echanism, give full play to role of technical supervisi on a nd realizati on of trouble shooti ng, manageme nt, improve d proces s management. T his year compl eted the boil er lower header leakage, boiler pres sure, a major ri sk management, com pleted 29 of grea t risks and 3 Ge neral problems of governa nce. Com plete chemistry lab constructi on, thermal control , and com plete the boil er scale i ntegrated manageme nt, host shafting vibration of 10 s cientifi c and te chnol ogical proje cts, s uch as. 势 趋 来 未 础 基 为 此 及 以 , 程 过 展 发 善 改 步 逐 到 生 产 从 、 了 述 简 先 首 ; 机 动 电 流 直 磁 永 是 的 绍 介 要 主

Complete supercriti cal 630 MW on-line simulation system dev elopment and applicati on of circulati ng water MCC standby pow er transformation, the transformation of desulfurization waste water, the unit water s upply system of compr ehe nsive treatment a nd di scharge valve modifi cation of coal mill 5 key technologi cal transformation pr ojects , group healt h is impr oved. --S cience a nd technology i nnovation i s further

increase d. Strengt hen t he characteristi cs of supercritical unit maj or iss ues, gradually cl earing the particularity of s uper critical unit and regularit y. Devel ope d motor oil time manageme nt, switch acti on times, statistics, coal -ai ded meas urement s oftware, improve s the pr oducti on level of lean manag ement. Increase d investment i n s cience and technolog y, reporting s cience a nd technology proje cts a nd 14 te chnical proje ct total cost per centage of the total annual production out put of 0. 25%. "Large -s cale coal-fire d power pla nt flue gas de sulfuri zation, de nitrification complete dev elopment and appli cation of key technol ogies" proj ect , w on the nati onal s cie nce a nd te chnol ogy progres s se cond pri ze. 63 0MW supercriti cal units optimized contr ol strategies and the 6 30M W devel opme nt and application of on-li ne sim ulation system for supercriti cal units, s uper critical 60 0M W unit s of turbi ne driven boiler feed pum p set of comprehensiv e treatment of defects D atang technology res pe ctively one or two a nd third. Meanwhile, information technology a chiev ements, t he company wa s name d "Chi na power informati on technology benchmarki ng enter prises ." --Repair and maintena nce has im proved f urther. Modify the inspe ction standards and standards on a regular basis, standardizi ng work proced ures, che cking a nd i nspection pr oje ct. Dee peni ng the BFS++ system, a nd im plements mai ntena nce i nformation share d. Reorganizing R B logi c again, a nd e ns ure the succes s of the R B. I nnovati ng the me cha nism of mainte nance manageme nt, impleme nted a proje ct manag er system. S uccessful completion of two a utonomous mainte na nce, reli ability impr oved stea dil y. Impleme nting tw o c -level mainte nance, proje ct themselve s 48. 7% and 42. 3%, res pectivel y. Accom plish tw o cir culati ng pumps re pair and over haul of four Mill s, maint enance teams to get exercis e. Promote the work of energy saving a nd cons umption reduci ng, complete the unit energy consumpti on diagnosi s, pla nt water bala nce test, 10 energy-saving pr oje cts. Second, we s hould a dher e to "three" on t he economic benefits of improvi ng, outreach

Delegates, staff: Hell o! in the r un -up to t he Spri ng Festival, we held one sess ion of four staff represe ntatives Conference 2 013 -works hop, full back i n 201 2, careful analy sis of the curr ent sit uation, dis cuss 2 013 development pl ans . Here, on behalf of my com pany 20 13 w ork reports to the Ge neral Ass embly, for consi deration. Pillar I, 2012 ba ck in 2 012, XX pow er companie s adhere to the party's 17 great s pirit for gui dance, compre he nsively impleme nt the scie ntific concept of devel opment, prom oting cost-lea ders hip strategy, standards, focus on impl ementation, lea n managem ent, continuously impr ove, sm ooth prese nt safety situati on of enterpri se manageme nt, busi ness ma nagement a nd contr ol s cientific a nd standardize d, and the de dicati on of staff, manage a harm oni ous and dem ocratic atmosphere of the good sit uation. Mai n indicat ors are as foll ows :-t he battery i ndicat or: power ge neration totaled 7.81 5 billi on k Wh, bey ond the a nnual budget impl ementation ca pacity of 315 million k Wh, an i ncreas e of 757 mil lion kWh. Sales totaled 7. 425 billion k Wh, exceedi ng sale s of 33 0 million kWh the annual Exe cutive budget, an i ncrea se of 7 29 million k Wh. --S ecurity measures : unpla nne d outages 2 .5 times. No personal i njury a cci dent occurre d, no maj or accide nt and above, no major fire a cci dent s without e nvironmental polluti on accide nts, safety for thre e cons ecutive years to mai nt ain sta bility to g ood posture . – Busi ness fi nancial indicat ors: total profits of 255 milli on Y uan, beyond t he a nnual budget of 207 million Yuan, beyond t he Data ng company index 41.8 9 million Yua n, a n increase of 1.76 mil lion Yua n, FCM a sses sment at grad e four. --Energy: power supply standard coal compl eting 31 2.25 g/k Wh, down 0 .1 g /kWh; integrate d auxiliary power consumpti on ratio in 5 .12%, dow n 0. 26%; poll utant emis sions performance grea tly reduce d compare d to last yea r, carbon 0 .09 g /kWh, s ulfur dioxide 0.10 4 g /kWh NOx 0.51 2 g /kWh; dust remova l efficiency of more t han 99 .8%. --Relia bility index: equivale nt availability fact or in 93. 47%, increase d 7.9 5% from a year earlier. Equivalent forced outage rate 0.08% , 0.16% re duction over the same peri od a year earli er. Major achievement s: first, we shoul d a dhere to t he two "manage ment system" basis, stre ngthe ning technologi cal resear ch, strengthe n hi dde n ha zards control and intrinsic safety Enterprise constructio

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