重修八.练习.
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第1篇第一章总则第一条为规范学校教学秩序,提高教育教学质量,保障学生合法权益,根据《中华人民共和国教育法》、《普通高等学校学生管理规定》等法律法规,结合我校实际情况,制定本规定。
第二条本规定适用于我校全日制本科、专科、高职等各层次学生。
第三条重修管理应遵循以下原则:(一)公平公正原则:重修管理应确保所有学生享有平等的受教育权利,对所有学生进行公平公正的处理。
(二)鼓励进步原则:通过重修制度,激发学生的学习积极性,鼓励学生不断进步。
(三)严格规范原则:重修管理应严格规范,确保教育教学质量的稳步提升。
第二章重修对象及范围第四条以下学生可申请重修:(一)因个人原因未通过课程考核的学生;(二)因病或其他特殊情况,经学校批准缓考或免修课程的学生;(三)因课程安排不合理,学生申请调换课程,经学校批准后需重修的学生;(四)其他经学校批准需重修的学生。
第五条重修范围包括:(一)公共基础课程;(二)专业基础课程;(三)专业核心课程;(四)实践教学环节;(五)其他学校规定的课程。
第三章重修程序第六条学生申请重修,应按照以下程序办理:(一)学生本人向所在学院提出书面申请;(二)学院审核申请,对符合重修条件的学生,报教务处审批;(三)教务处对学院上报的重修申请进行审批,并在规定时间内通知学生;(四)学生根据教务处通知,按时参加重修课程的学习和考核。
第七条学生申请重修,应提供以下材料:(一)学生本人身份证复印件;(二)重修申请表;(三)因病或其他特殊情况需缓考或免修课程的学生,应提供相关证明材料;(四)其他学校规定的相关材料。
第四章重修考核与成绩认定第八条重修考核应严格按照课程教学大纲和考核办法进行,考核方式与原课程相同。
第九条学生重修考核成绩合格,可获得该课程的成绩,并计入总学分。
第十条学生重修考核成绩不合格,可根据学校规定,申请再次重修。
第十一条学生重修课程成绩,计入学生总学分和平均学分绩点。
第五章重修费用第十二条学生重修课程,应按规定缴纳重修费用。
重修复习题 第二章 烷烃课后题P21 一、二、三、四、五、六、七一、命名下列化合物1.CH CH 3CH 3C CH 2CH 2CH 3CH 3CH 32. C 2H 5CH CH 3CH 3C CH 2CH 2CH 3CH 3CH 2CH 22,2,3-甲基己烷 4,4-二甲基-5-乙基辛烷三、回答问题3.将下列烷烃按其沸点由高到低的顺序排列 。
(A) 正戊烷 (B) 异戊烷 (C) 正丁烷 (D) 正己烷 D >A >B >C9.下列自由基中最稳定的是( ),最不稳定的是( )。
(A) CH 3·(B) C(CH 3)3· (C) CH(CH 3)2· (D) CH 2CH 3· 最稳定的为:B ,最不稳定的为: A ; 10. 下列自由基中最稳定的是( )。
(A)CH 2CH (CH 3)2CH 2·(B) CH CH 3CH (CH 3)2· (C)CH 2CH 3(CH 3)2C · (D) CH 2CH 3CH CH 2CH 3· 最稳定的为:C17.试将下列烷基自由基按其稳定性大小顺序排列 。
(A) CH 3· (B) (C 2H 5)3C · (C) (C 2H 5)2CH · (D) CH 2C 2H 5· B >C >D >A19.下列烷基自由基按稳定性由大到小排列成序 。
(A)CHCH 2CH 3CH CH 3CH 3· (B) CHCH 2CH 3CH 3CH 2CH 2· (C) CH 2CH 3CH 3CH 3C CH 2· (D) CH 3·C >A >B >D第三章 烯烃课后题 P45 一(1,3,5)二(2,4,6)四、五(1,3,5,7,8)、六、七、十、十一、十三一、写出下列各化合物名称1. CH 2CH 3CH 3C CH 3CH(CH 3)2C 2. CH 2CH 3H HC CH(CH 3)2C (Z)-2,3,4-三甲基-3-己烯 (E)-5-甲基-2-己烯7. CH 2CH 3H 3C C Br C 2H 5CCH 2 8. CH CH CH 2C 2H 5C 2H 5(E)-3-乙基-2-溴-2-己烯 3-乙基-1-戊烯9. CH 2CH 3CH 3(CH 2)2C10. CH32-甲基-1-戊烯 3-甲基环己烯 三、完成下列反应式1.(1)(2)CH 22H 2SO 4C (CH 3)2 OH CH 3C (CH 3)25.℃Br 2300Br9.C 2H 5C 2H 5CH=CH COOH 2CH 2CH 317.NBS+CH 3Br CH 3 27.HI F 3C +CH=CH 2 CH 2CH 2IF 3C29.CH 2H +I +ClC (CH 3)2CH 2(CH 3)2CH ICl四、回答下列问题1.下列碳正离子稳定性由大到小的顺序为 C>B>D>A 。
重修学习安排计划书一、学习目标1. 重新学习和巩固原来学过的知识,达到复习的目的,进一步巩固基础知识;2. 弥补之前学习中的不足,重新学习的知识,提高对已学过知识的深度和广度;3. 为未来的学习和工作做好准备,建立坚实的知识基础,为自己的发展打下良好的基础。
二、学习计划1. 制定学习计划,明确学习目标和时间节点,合理安排学习时间,确保学习效果。
2. 制定每日学习计划,包括针对性学习任务和计划,确保每天的学习时间得到充分利用。
3. 督促自己,坚持学习计划,保证不偏离学习的轨道,最大程度地提高学习效果。
三、学习方法1. 系统学习:对每门学科进行系统的学习,从基础知识开始,逐步深入,形成完整的知识体系。
2. 多角度学习:采用多种学习方法,包括阅读、听课、做练习和实践等,不拘泥于一种学习方式,全面提高学习效果。
3. 理论联系实际:将学习的理论知识与实际应用相结合,做到学以致用,提高对知识的理解和掌握程度。
4. 多渠道获取信息:利用图书馆、网络等资源,获取更多的学习资料,帮助深入学习和理解知识。
四、学习内容及时间安排1. 重新学习之前学过的知识,确保对基础知识的全面深入的掌握,包括数学、语文、英语、科学、地理、历史、美术、音乐等课程。
每门学科的学习时间安排为2个月;2. 补充学习相关的知识,包括辅导书、练习册、模拟试题等,有针对性地进行学习与巩固,每门学科的学习时间为1个月;3. 制定全面复习计划,对所有学科进行系统的复习和总结,每门学科的复习时间为2个月;4. 设立每周小结与总结会议,对学习情况进行反思和总结,及时调整学习计划,确保学习的方向正确和学习效果显著。
五、学习环境及物质准备1. 创造良好的学习环境,静心学习,配备必要的学习用品,包括书籍、文具、计算机等;2. 安排专门的学习空间和时间,减少外界的干扰,保证学习的高效进行;3. 保持良好的生活习惯,包括健康的饮食、适量的锻炼、良好的睡眠,保持良好的学习状态;4. 积极参加学校组织的学习活动,积极参加课外辅导等补充学习活动,提高对知识的掌握和应用能力。
电工基础重修练习卷一一、 填充:1、网孔法因为选取自电阻的电压与电流为关联参考方向, 所以自电阻都取—————,当流过互电阻的两个相邻网孔电流的参考方向一致时, 互电阻取—————, 反之取—————。
凡参考方向与网孔绕行方向一致的电源电压取—————。
2、在负载星形连接时,线电压的大小是相电压大小的—————倍, 且线电压的相位比相应相电压相位—————。
对称三相星形电路的中点电压为零, 即负载中点与电源中点—————, 因而中线电流为—————。
3、某楼内有220 V100W 的灯泡100只, 平均每天使用3h, 每月(一个月按30天计算)消耗—————电能。
4、当外接电阻R 等于二端网络的戴维南等效电路的电阻Ri 时, 外接电阻获得的功率—————。
满足R= Ri 时, 称为负载与电源匹配。
此时传输效率—————。
5、三个正弦电压分别为试确定它们的相位关系:A u 越前于B u —————;A u 滞后于C u —————;B u 越前于C u —————。
二、是非题:1、没有串联电阻的电压源和没有并联电阻的电流源之间有等效的关系。
( ) 2、由一个线圈的交变电流在另一个线圈中产生感应电压的现象叫做互感现象。
( )3、不论负载对称与否, 负载端的电压总是对称的, 这是三相四线制电路的一个重要特点。
( )4、 周期性交流电路中的平均功率就是其瞬时功率在一个周期内的平均值。
( ) 5、负载对称时, 将中线断开或者短路对电路有影响。
( )三、简述题:V t u V t u V t u C B A ) 32sin( 2 220 ) 32 sin( 2 220 ) 6 sin( 2 220 π ω π ω πω + = - = + =1、功率因数低会引起什么不良后果?提高功率因数的方法有哪两种?2、串联谐振的基本特征有哪些?四、计算:1、试求图示电路中的Uab 。
2、求图示电路的戴维南等效电路。
2010 – 2011学年第一学期大学英语一级重修练习题(一) 注意:答案一律写在答题纸上Ⅰ. Vocabulary and Structure (30%)1. She_______for the old man as if he were her own father.A. careB. caresC. caringD. careful2. A_______driver is a danger to us all.A. carefulB. carelessC. carefullyD. care3. In _______to English, you’d better learn another foreign language.A. addB. addingC. additionalD. addition4. May I _______your English dictionary for an hour or two?A. usefulB. uselessC. useD. used5.As Lenin says, forgetting the past _______betrayal.A. seemB. meansC. mereD. mare6. I tried to _______her; but what could I say?A. comfortB. comeC. comfortableD. coma7.It is _______that the cost will be greater than we think.A. probableB. probablyC. probabilityD. possibly8. That night she _______hunger for the first time.A. experiencingB. experiencedC. experienceD. inexperience9. He had a ______look on his face.A. seriouslyB. doubtfulC. angerD. happily10. He is loved by anyone who has the _______to know him.A. luckilyB. luckyC. fortuneD. unfortunate11. After reading the novel he was too _______to go to sleep that night.A. retireB. excitedC. excelD. exit12. At first he decided to move to Chicago, but _______he changed his mind.A. afterB. laterC. beforeD. until13.His time is fully_______ by his job as manager.A. occupiedB. occupyC. stayD. fill14 The boat _______, throwing the boys into the water.A. went overB. turned overC. turn roundD. turn back15. He had a _______problem with his car, but he fixed it himself.A. minorB. cuteC. goodD. nice16. It was several minutes before I became_______ of what was happening in theclassroom.A. knowB. awareC. wareD. realize17. Too much discussion will only _____ confusion.A. lead toB. makeC. leads toD. makes18. Fresh vegetables are nutritious; ________, they are cheaper than frozen ones.A. howeverB. butC. whileD. furthermore19. She ________ the plans again and discovered three mistakes.A. went overB. previewC. reviewD. go over20.Mary bought a _______of shoes yesterday.A. bunchB. pairC. pieceD. slice21. The couple are seeking for a unique _______of furniture.A. packetB. pieceC. bunchD. slice22.One who fight fires is a _______A. firemanB. milkmanC. spacemanD. businessman23. The letter is too large_______ come by the letter post.A. asB. intoC. toD. on24. His classmates tried to dissuade _______from swimming across the lake.A. heB. himC. hisD. her25. I recognized him as a friend of my father’s whom I had previously _______once or twice.A. meetB. metC. meetingD. meets26. If you have worked hard_______, you won’t have to sit up all night before the exam.A. at other timesB. after allC. arrange forD. occasion27. They did a lot _______work but refused to take any extra pay.A. extraB. meaninglessC. uselessD. bad28. The old couple are proud _______ their son.A. overB. ofC. onD. for29. He is a Frenchman, he speaks ______.A. ItalyB. FrenchC. JapanD.England30. Many people have lost_______with their loved ones in the 5.12 Wenchuan earthquake.A. contactB. newsC. messageD. relationⅡ. Cloze (15%)The voyage began because I was terrified of Cape Horn. If anything terrifies me, I must 31__________ it.I had read terrible things written 32__________ Cape Horn by people who had 33__________ in making the passage. All the water 34__________ South America and the Antarctic is squeezed 35_________, this narrow, shallow gap. You get waves 50 feet 36__________.I read a lot of books about the old clipper ships that used to 37__________ round the Horn, and my plan took shape. I would 38__________ the route of these great sailing vessels from England to Australia39__________the Cape of Good Hope and 40_________ round cape Horn back to England. Not only that, 41__________I would try to equal their average sailing time for those voyages.42__________it turned out, I did not succeed. I 43__________ mistakes. I did not go as 44__________ as they did. But I 45__________ sail round the round single-handed. No one had ever done that before. It is always satisfying to do something that no one else has done.31. A. conquer B. conquering C. conquered D. conquers32. A. off B. about C. across D. into33. A. succeed B. succeeded C. succeeding D. succeeds34. A. among B. between C. in D. of35. A. through B. off C. at D. on36. A. low B. high C. wide D. long37. A. sole B. sail C. sell D. sold38. A. follow B. fell C. taken D. making39. A. into B. on C. round D. off40.A. since B. then C. as D. which41.A. but also B. as well C. not only D. even if42. A. of B. as C. on D. well43. A. take B. make C. had D. taken44. A. long B. fast C. wide D. slow45. A. done B. did C. do D. doingⅢ. Reading Comprehension (40%)Directions: Read the following passages carefully and do the multiple-choice questions.Questions 46 to 55 are based on the following passages.Passage ASandwich was an Englishman. He lived in the 18th century. Sandwich was rich, but he liked to play cards for money. He often played for 24 hours, and didn't even stop to have his meals. He ordered his servants to bring him some meat and bread. He put the meat between the two pieces of bread and held the food in his left hand while he played cards with his right hand. People liked Sandwich's idea, and from then on they ate meat and bread as Sandwich did.From the name of the man, Sandwich, we have the word of food “sandwich”today.46. Sandwich was the ______. .A. name of a servantB. name of a man with a lot of moneyC. poor man who lived on playing cardsD. name of food which was liked by the rich47. Sandwich ______.A. was so interested in playing cards that he had no time to have his mealsB. often brought some bread with him to play cardsC. never ate anything when he played cardsD. had no money to play cards with at last48. People liked Sandwich's idea because ______. .A. bread, together with meat was cheapB. he always won when he played cardsC. they liked Sandwich himselfD. when they ate with one of their hands they could dosomething with the other49. Today, "sandwich" is ______. .A. also a name of a rich manB. two pieces of bread without meat in betweenC. not interested in playing cardsD. a name of a kind of food50. Sandwich is the food invented by ______.A. a ChineseB. a FrenchmanC. an ItalianD. an EnglishmanPassage BIn 1933 an unknown American called Clarence Nash went to see the filmmaker Walt Disney. He had an unusual voice and he wanted to work in Disney's cartoon (动画片) film for children. When Walt Disney heard Nash's voice, he said “Stop! That's our duck!”The duck was the now-famous Donald Duck, who first appeared in 1934 in the film The Wise Little Hen. Donald lived in an old houseboat (水上住家) and wore his sailor jacket and hat. Later that year he became a star after an eight-minute Mickey Mouse film. The cinema audience liked him because he was lazy and greedy (贪婪的), and because he lost his temper (发脾气) very quickly. And they loved his voice when he became angry with Mickey's eight nephews (侄子). Soon Donald was more popular than Mickey Mouse himself, probably because he wasn’t a goody-goody like Mickey.In the 1930S,' 40s and '50s Donald and hid friends Mickey, Goofy and Pluto made hundreds of Disney cartoons. He also made educational films about the place of the USA in the world, and safety in the home. Then in 1966 Donald Duck and his voice disappeared---there were no more new cartoons.Clarence Nash died in February 1985. But today's children can still see the old cartoons on television and hear that famous voice.51. Who made Donald Duck film?A. Mickey MouseB. Clarence NashC. Walt DisneyD. Pluto52. When was the first Donald Duck film made?A. in 1933B. in 1934C. in 1966D. in 193053. Who was Clarence Nash?A a cartoonistB. Donald Duck's voiceC. a film-makerD. a sailor54. Where do today's children see Donald Duck?A. in new filmB. at the cinemaC. on televisionD. at concerts55. In which year did Clarence Nash die?A. 1985B. 1966C. 1930D. 1933Passage CThe men remained attached to friends and spoke of missing them, but they did not necessarily keep in close touch. They assumed that when they returned, things would be as they always had been. They called their families every other week or so, but a fair amount of that was “checking in” (打招呼). They talked about what they were doingmore than about how they were feeling, and were interested in how things were at home but didn’t ask a lot of question. As for new relationships, the men were interested in finding “a buddy (伙伴)” much more than an emotional confidant(知己).For the women, staying connected with families and friends played a central role in their lives away from home. Some talked about writing long letters to friends to share their experiences and sometimes to work out misunderstandings. They knew the relationships they wanted, ones in which they could be open, express even painful feelings and encourage discussion and reflection.在朋友都住的,并谈到思念他们,但他们并不一定保持着密切的联系。
辅导重修实施方案一、背景介绍在学生学习过程中,难免会遇到一些学习困难或者考试不理想的情况。
针对这种情况,学校需要制定一套完善的辅导重修实施方案,帮助学生进行有效的学习辅导和重修,以提高学生的学习成绩和综合素质。
二、实施目的1.帮助学生解决学习中的困难和问题,提高学习成绩;2.培养学生的自主学习能力和解决问题的能力;3.促进学生的全面发展,提高综合素质。
三、实施对象全校学生均可申请参加辅导重修,特别是成绩不理想或者遇到学习困难的学生。
四、实施内容1.学科辅导:针对学生学习中遇到的具体学科问题,安排专业教师进行一对一或小组辅导,帮助学生理解和掌握知识点,提高学习成绩。
2.学习方法指导:针对学生学习方法不当或者学习习惯不好的情况,开设学习方法指导课程,帮助学生树立正确的学习观念,掌握科学的学习方法。
3.心理辅导:针对学生学习压力大或者心理问题的情况,开设心理辅导课程,帮助学生调整心态,树立自信心,积极面对学习和生活。
4.重修课程:对于成绩不合格或者挂科的学生,安排相应的重修课程,帮助学生巩固和提高学习成绩。
五、实施方式1.学校组织:学校成立辅导重修工作小组,负责统筹安排辅导重修工作,制定具体实施方案和时间表。
2.教师指导:学校安排专业教师担任学科辅导和学习方法指导的教师,负责学生的学习辅导工作。
3.心理辅导:学校邀请专业心理老师或者心理咨询师进行心理辅导工作,帮助学生解决心理问题。
4.课程安排:学校根据学生的实际情况,合理安排学科辅导、学习方法指导和心理辅导的课程时间,确保学生能够充分参与。
六、实施效果1.学生学习成绩得到提高,学习兴趣和学习动力得到激发;2.学生的自主学习能力和解决问题的能力得到提高;3.学生的心理健康得到保障,积极面对学习和生活。
七、实施评估学校将对辅导重修实施方案进行定期评估,根据学生的实际情况和反馈意见,及时调整和改进实施方案,确保实施效果的持续和提高。
八、总结辅导重修实施方案的制定和实施,对于学校促进学生全面发展,提高学生学习成绩和综合素质具有重要意义。
《机械设计基础》重修复习试卷(二)一.填空1、在铰链四杆机构中相对静止的构件称为 机架 ;能作圆周运动的构件称 为 曲柄 ;不与机架相连的构件称为 连杆 。
2、三星轮变向机构之所以能够起变向作用,是因为有 惰轮起作用,它 不 影响传动比。
3、键连接通过键将 轴与轮毂结合在一起,从而实现周向运动传递扭矩。
4、根据轴承与轴工作面摩擦性质的不同,轴承可分为 滑动摩擦和 滚动摩擦。
5.为保证齿轮传动的连续性,将___实际啮合线_与__基圆齿距__的比值称为重合度。
6、按照滚动轴承所受载荷的不同,滚动轴承分为 向心 、 推力 和和 向心推力 三类。
7、渐开线齿廓的啮合特性有瞬时传动比准确 、 中心距可分离性 和 齿廓间相对滑动等。
8.带传动的主要失效形式为打滑 和带的 磨损 。
9.齿面接触强度设计计算是针对齿面点蚀失效进行的;齿根弯曲疲劳强度设计计算是针对齿轮 疲劳折断 进行的。
二.选择题1.平行四边形双曲柄机构,当主动件曲柄作匀速转动时,从动曲柄将怎样运动?( )A .匀速转动 B.间歇转动 C .变速转动 D.往复摆动 2.曲柄滑块机构中,当( )为主动件时机构有死点位置出现。
A.曲柄B.滑块C.连杆装 订 线3.以下关于曲柄摇杆机构的叙述正确的是( )A.只能以曲柄为主动件 B.摇杆不可以作主动件 C.主动件既可能作整周旋转运动也可以作往复摆动 D. 以上都不对4.杆长不等的铰链四杆机构,若以最短杆为机架,则是什么机构( ) ?A.曲柄摇杆机构B.双曲柄机构或双摇杆机构C.双摇杆机构D.双曲柄机构5.图示凸轮轮廓是分别以O和O1为圆心的圆弧和直线组成的。
该凸轮机构从动件的运动过程是( )类型。
A 升---停---降---停;B 升---停---降;C 升---降---停;D 升---降。
6.凸轮连续转动,从动件的运动周期是( )。
A 从动件推程时间;B 从动件回程时间;C 从动件推程和回程时间之和;D 凸轮一转的时间。
上海电机学院 2012–2013学年第_1_学期(023005A1)《理论力学》课程重修考试试卷开课学院: 机械学院 考试时间 120 分钟 重修 计算器□√ 草稿纸□√ 答题卡□考试形式: 开卷□/闭卷□√考生姓名: 学号: 班级:一、选择题(共20分,每小题2分)1、作用在一个刚体上的两个力1F 、2F ,且满足120F F +=,则该二力可能的关系是( C ) A .作用力和反作用力; B .一对平衡力或作用力和反作用力;C .一对平衡力或一个力偶;D .作用力和反作用力或一个力偶。
2、各力线均相交于某直线的空间力系独立平衡方程的个数为( ) A. 3 B. 4 C. 5 D. 63、平面桁架总杆数m ,总节点数n ,则超静定桁架的条件是( ) A. m>2n-3 B. m<2n-3 C. m>2n+3 D. m<2n+34、A ,B 为某平面力系作用面内任意两点,该力系向A 点简化的结果是主矢'RA F 和主矩A M ,向B 点简化的主矩为B M ,则下述结论正确的是( A ) A .当0'=RA F 时,必有B A M M = B. 当0'=RA F 时,可能有B A M M ≠ C .当'≠RA F 时,必有B A M M = D. 当0'≠RA F 时,必有B A M M ≠5、点作曲线运动,若其法向加速度越来越大,则该点的速度( C )。
(A ) 越来越大; (B ) 越来越小;(C ) 大小变化不能确定。
6、当物体处于临界平衡状态时,静摩擦力s F 的大小( C ) A .与物体的重量成正比B .与物体的重力在支承面的法线方向的大小成正比C .与相互接触物体之间的正压力大小成正比D .由力系的平衡方程来确定7、两个点沿同一个圆周运动,则以下哪个结论正确( )A 、加速度较大的点,其切向加速度分量一定较大;B 、加速度较大的点,其法向加速度分量一定较大;C 、若两点的加速度矢在某瞬时相等,则其瞬时速度大小必相等;D 、若两点的加速度矢在某时间段内相等,则其速度在该时间段内必相等; 8、满足下述哪个条件的运动是刚体的平面运动(C)(A )刚体运动时,其上某直线始终与其初始位置保持平行(B )刚体运动时,其上某两条相交直线始终与各自初始位置保持平行 (C )刚体运动时,其上所有点到某固定平面的距离始终保持不变 (D )刚体运动时,其上每一点都在某固定平面上运动。
一、选择题(每小题3分,共15分): 1、sin limx x xx→∞+=( ).(A )0; (B )1; (C )2; (D )∞.2、设函数()113, 0(), 0x x x f x x k x ⎧⎪->=⎨+≤⎪⎩ 在点0x =处连续,则k =( ).(A )1e -; (B )e ; (C )3e -; (D )3e .3、设2xy e -=,则dy =( ).(A )2xe dx -; (B )2x e dx --; (C )22x e dx -; (D )22x e dx --.4、设()()f x dx F x C =+⎰,则(12)f x dx -=⎰( ).(A )1(12)2F x C --+; (B )1(12)2F x C -+; (C )2(12)F x C --+; (D )2(12)F x C -+. 5、211dx x+∞=⎰( ). (A )0; (B )1; (C )1-; (D )+∞.1、设⎪⎩⎪⎨⎧=≠=0,,3sin 1)(x a x x x x f ,要使)(x f 在(,)-∞+∞处连续,则()a =.A :0;B : 1;C :13; D :3. 2、()2sin df x dx等于().A :()22sin sin f x x ' ; B :()2sin sin 2f x x ; C :()2sin f x '; D :()2sin sin 2f x x '. 3、12)1(-=-f 是函数26323-+-=x x x y 在区间[]11,-的()A :最小值;B : 极小值;C : 最大值;D :极大值 . 4、设)(x f 的一个原函数是2x e -,则()()f x =.A :x e 2- ;B :22x e --;C :24x e --;D : 24x e - . 5、设函数 ()⎰-=xat d t x G 2,则 ()().x G ='A : 2x ;B :2x -;C : x 2;D : x 2-. 1、下列各式中,()的极限为1.A :sin limx x x →∞; B :1lim sin x x x →∞; C :2sin lim x xx π→; D :01lim sin x x x →.2、设()ln sin 0,1xx y a e a a a ⎛⎫=+->≠⎪⎝⎭,则()='y .A :cos x a a e x +-; B : 1ln cos x a a e x +-; C :1ln x a a x +; D : 1ln x a a ax+.3、在区间[]11,-上满足罗尔定理条件的函数是().A :sin x y x=; B :()21+=x y ; C :32x y =; D :12+=x y .4、设()F x 是()f x 的一个原函数,C 为常数,则()也是()f x 的一个原函数。