天津大学高职接本811专业1112课程模拟题1
天津大学管理科学与工程专业考研真题
天津大学管理科学与工程专业考研真题天津大学管理科学与工程专业考研复习是有依据可循的,考研学子关注事项流程为：考研报录比-大纲-参考书-资料-真题-复习经验-辅导-复试-导师。
小编最近的一个工作就是以专业为单位，为大家汇总该专业可能会涉及到的真题资料，方便同学们搜寻。
小编今天汇总整理的是天津大学管理科学与工程专业，该专业加上非全日制一共有11个研究方向，涉及到10门专业课科目，下面就将小编忙碌的成果分享给大家伙们，同学们各取所需啊：1.901数据结构与程序设计《天津大学901数据结构和程序设计考研红宝书》，由天津考研网主编。
包含：天津大学901数据结构与程序设计1996－2007、2013、2014、2015、2016年考研真题；天津大学901数据结构与程序设计1996-2007、2013-2016年考研试题解析及参考答案；天津大学901数据结构与程序设计2000-2007、2013、2014年考研真题解析。
2.802材料力学《天津大学802材料力学考研全套复习资料》，由天津考研网主编。
包含：天津大学802材料力学1997－2007、2009-2012、2014、2015、2016年考研真题；附赠1999-2004年试题参考答案。
3.803机械原理与机械设计《天津大学803机械原理与机械设计考研全套复习资料》，由天津考研网主编，包含：天津大学803机械原理及机械设计1996－2016年考研真题；天津大学803机械原理及机械设计2005－2016年考研试题参考答案；天津大学803机械原理及机械设计2008-2016年考研真题解析。
4.811电路《天津大学811电路考研全套复习资料-高分学长全程版》，由天津考研网主编。
包含：天津大学811电路1991－2016年考研真题；天津大学811电路1999－2016年考研试题参考答案；天津大学811电路2005-2015年考研真题解析。
5.812自动控制理论《天津大学812自动控制理论考研全套复习资料-高分学长全程版》，由天津考研网主编。
天津高职升本科文化课考试英语真题
机密★启用前2011年天津市高等院校“高职升本科”招生统一考试英语本试卷分第1卷(选择题)和第Ⅱ卷(非选择题)两部分。
第1卷1至8页，第Ⅱ卷9至10页。
共150分。
考试时间120分钟。
第I卷(选择题共95分)注意事项：1．答第1卷前，考生务必将自己的姓名、准考号、考试科目涂写在答题卡上，并将本人考试用条形码贴在答题卡的贴条形码处。
2．每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑。
如需改动，用橡皮擦干净后，再选涂其他答案标号，答在试卷上的无效。
3．考试结束，监考入将本试卷和答题卡一并收回。
Part I. Grammar and Vocabulary (15 points)Directions:There are 15 sentences, each with a blank. Under each sentence, there are four choices marked A, B, C and D. Read the sentences and the choices carefully and then choose the one that best completes the sentence.1. A: Thank you so much for your lovely gift.B: ______.A. Never mindB. I’m glad you like itC. Please don’t say soD. No, it’s not so good2. One of my ______ sayings is “No pains, no gains”.A. popularB. fondC. favorableD. favorite3. It was during the rush hour ______ the accident happened.A. whenB. thatC. beforeD. while4. Don’t forget ______ the letter for me tomorrow.A. postingB. to postC. to have postedD. having posted5. It was ______ me to interpret the thoughts swimming behind her eyes.A. beyondB. pastC. acrossD. below6. A: Well, it is time for boarding. Thank you for coming here to see me offB: ______.A. It is very kind of youB. Nice to meet youC. I wish you a pleasant journeyD. I hope you will soon feel better7. The guard at the gate insisted that everybody ______ the rulesA. obeysB. obeyC. will obeyD. would obey8. The twin brothers are ______ that you can hardly notice any difference between them.A. like so muchB. so very alikeC. so much alikeD. too alike9. Although many people are ______ on going abroad, he prefers to stay in his own country.A. keenB. crazyC. madD. eager10. Whenever possible, Frank ______ how well he speaks Chinese.A. shows upB. shows aroundC. shows outD. shows off11. Only when I left my parents for Beijing ______ how much I loved them.A. I realizedB. I had realizedC. did I realizeD. had I realized12. From what has been discussed, we may draw the ______ that its advantages are far greaterthan its disadvantages.A. answerB. attentionC. solutionD. conclusion13. I will bring my tennis things along in case we ______ time for a game tomorrow.A. shall haveB. will haveC. haveD. are going to have14. All electrical goods sold in our shop will be ______ for one year.A. guaranteedB. protectedC. ensuredD. granted15. Having been working in this school for over 20 years, Mr. Brown is ______ aninexperienced teacher.A. by no meansB. by any meansC. by all meansD. by every meansPart II. Cloze Test (30 points)Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. Read the passage carefully and choose the one that fits right into the passage.I grew up knowing I was different, and I 16 it. I was born with a misshapen （畸形的）lip. When my schoolmates asked, “What happened to your 17 ?”I’d tell them I’d fallen and 18 it on a piece of glass. Somehow it seemed more acceptable to have suffered an accident than to have been born 19 . I was sure that no one 20 my family could love me, or even liked me. Then I entered Mrs. Leonard’s second-grade class.Mrs. Leonard was round and pretty, with shining brown hair and warm, dark, 21 eyes. Everyone admired her. But 22 came to love her more than I did. And I loved her for a 23 reason.The time came for the 24 tests given at our school. I could only just hear out of one ear, and I didn’t want others to know that I was different. So I cheated.The “whisper test”25 each child to go to the classroom door, turn sideways, close one ear with a finger, 26 the teacher whispered something from her desk, which the child repeated. Then the same for the other ear. Nobody checked how tightly the 27 ear was covered, so I only pretended to block mine.As 28 I was the last. But all through the testing I 29 what Mrs. Leonard might say to me. I knew from previous tests that the teacher 30 things like “The sky is blue.” Or “Do you have new shoes?”My 31 came. I turned my bad ear toward her, plugging up the other just enough to be able to hear. I waited and then came the 32 words that changed my life 33 .Mrs. Leonard, the teacher I 34 , said softly, “I 35 you were my little girl.”16. A. loved B. expected C. hated D. liked17. A. lip B. ear C. finger D. eyes18. A. beaten B. cut C. formed D. killed19. A. similar B. separations C. series D. sections20. A. inside B. possible C. enjoyable D. profitable21. A. surprising B. into C. over D. by22. A. everyone B. connect C. collect D. communicate23. A. special B. fast C. high D. heavy24. A. math B. history C. hearing D. blood25. A. encouraged B. persuaded C. agreed D. required26. A. if B. even if C. as if D. while27. A. untested B. left C. bad D. tested28. A. unusual B. usually C. usual D. unusually29. A. examined B. wondered C. understood D. heard30. A. questioned B. announced C. shouted D. whispered31. A. time B. way C. opportunity D. chance32. A. five B. six C. seven D. eight33. A. sometimes B. often C. all D. forever34. A. knew B. admired C. realized D. spoke35. A. expect B. wish C. wanted D. knewPart III. Reading Comprehension (50 points)Directions:There are four passages in this part. Each passage is followed by a number of questions for comprehension. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.Passage OneI don’t know how I became a writer, but I think it was because of a certain force in me that finally burst through and found a channel. My father, an ordinary worker, was a man with a great respect. He had a tremendous memory, and he loved poetry, Hamlet’s Soliloquy, Macbeth, Grey’s “Elegy”, and all the rest of it. I heard it all as a child; I memorized and learned it all.He sent me to college to the state university. The desire to write, which had been strong during all my days in high school, grew stronger still. I was editor of the college paper, the college magazine, etc., and in my last year or two I was a member of a course in playwriting which had just been established there. I wrote several little one-act plays, still thinking I would become a lawyer or a newspaper man, never daring to believe I could seriously become a writer.Then I went to Harvard, wrote some more plays there, became obsessed（着迷的）with the idea that I had to be a playwright, left Harvard, had my plays rejected, and finally in the autumn of 1926, how, why, or in what manner I have never exactly been able to determine. But probably because the force in me finally sought out its channel, I began to write my first book in London, I was living all alone at that time. I had two rooms－a bedroom and a sitting room －in a litter square in Chelsea in which all the houses had that familiar, smoked brick and cream-yellow-plaster look.36. From paragraph 1, we know that the author’s father .A. played an important role in his choice of careerB. had no interest in literature.C. strongly opposed his becoming a writer.D. suggested that he read Hamlet to learn to write.37. The author believes that he became a writer mostly because of .A. his special talentB. his father’s teachingC. his study at HarvardD. a hidden force in him38. At Harvard, the authorA. was editor of the college magazine.B. began to think of becoming a writer.C. took a course in playwriting.D. worked as a newspaper man.39. What did the author do in 1926?A. He published his plays.B. He got married.C. He went to Harvard.D. He started his first book.40. Which of the following could be the best title for the passage?A. How I Loved My FatherB. How I Went to HarvardC. How I became a Writer.D. How I Wanted to Be a LawyerPassage TwoThroughout the world, every night children and their elders are talking on-line: many of them are talking at the same time. If you’ve been joining in chat room conversations, you might have become one of the millions who wrote in a special short form of English.It is fast: it allows you to talk to six people once. It is convenient: you can use three or four words per exchange. It takes cleverness concentration and quick fingers. And it requires very simple language. There’s neither time nor space for explanations. Why bother to press the keys telling six friends you have to leave for a moment to take care of your little brother when BRB (=be right back) will do? Want to enter a conversation? Just type PMFJI (=pardon me for jumping in). Interested in whom you’re talking to Type A/S/L, the common request to know your pals age, sex and location. You may get 15/M/NY as a reply from your pal. If something makes you laugh, say you’re OTF (=on the floor), or LOL (=laughing out loud), or join the two into ROTFL (=rolling on the floor laughing). And when it’s time to get back to work or go to bed, you type GTG (=got to go) or TTYL (=talk to you later).People want to write as fast as possible and they want to get their ideas across as quickly as they can. Capital（大写的）letters in sentences are left in the dust, except when expressing feeling, as it takes more time to hold down the “shift” key and use capitals. Punctuation（标点）is going too.41. According to paragraph 1, online chatting allows people in the world to .A. learn millions of wordsB. pick out things to buyC. talk at the same timeD. find out funny tings42. What does the underlined sentence in paragraph 2 mean?A. People have to communicate in a funny wayB. People have to express themselves in a proper way.C. People have to communicate in a logical wayD. People have to express themselves in a simple way.43. An answer “19/M/HK” to your A/S/L question means .A. a 19-year-old boy from Hong KongB. a boy being online for 19 minutesC. being in Hong Kong for 19 monthsD. 19 boys from Hong Kong44. Which of the following is a way to save time when chatting online?A. Using less short forms of English.B. Using less capital letters or punctuation.C. Coming up with ideas as quickly as possible.D. Using the “shift” key when sending E-mails.45. What is this passage mainly about?A. A special form of English onlineB. A special form of chatting room.C. A new function of the Internet.D. A new function of computers.Passage ThreeMany doctors are now trained in techniques to lessen tension and stress. Here health professionals reveal their favorite methods.Comfort with food. When diet expert Judith Wurtman is stressed out, she does what a lot of people do this time of year: she reaches for food. But in her case, it’s a healthy rice cake or two. “My research suggests that carbohydrates（碳水化合物）raise levels of a brain chemical, which has a calming effect on the entire body,” says the MIT research scientist. “So signs of stress—such as anger, tension, and inability to focus—are eased.”Run from your problems. Dr. Kenneth H. Cooper, who popularized aerobics （有氧运动）through his book, handles his own stress with a daily after-work run. He knows that physical activity reduces anxiety and depression. “Aerobic exercise is the best way to dissipate stress,” says Cooper.Look to the light side. On his way to the hospital where his father was to have surgery, Joel Goodman shared a hotel bus with the anxious relatives of several patients. The driver began telling his stressed-out passengers a few jokes. “Then he did some magic tricks that had my mother and me laughing,” Goodman says. “In that five-minute ride he taught us that humor can lessen our stress.”The surgery was successful, and Goodman was so moved by his experience that he researched laughter’s power. “A good laugh relaxes muscles, reduces blood pressure, restrains stress-related hormones and enhances the immune system（免疫系统）,” he says.Go green. Coffee, loaded with hidden sources of caffeine（咖啡因）, stimulates the nervous system and can make you feel stressed more easily. That’s why Arizona doctor Andrew Weil, author of the best seller Spontaneous Healing, does not take caffeine. “When I want gentle energy, I drink green tea. It contains a caffeine-like element”, Weil says. It also contains compounds that, some studies suggest, have anti-cancer effects.46. When people have stress, Judith Wurtman suggest that they .A. eat somethingB. take medicineC. go on a dietD. sit for a while47. By taking a run after work, a person can .A. raise stress levelB. feel less anxiousC. forget about his workD. finish his daily work48. What is the meaning of the word “dissipate” in paragraph 3?A. DisturbB. LevelC. ReduceD. Depress49. Looking to the light side can .A. make you anxiousB. stress you outC. make you immune to stressD. lessen your stress50. Which of the following group of people can have a happier life, according to the passage?A. Those who are continuously eating something.B. Those who use right methods to reduce tension.C. Those who study medicine or psychologyD. Those who are always engaged in working.Passage FourWhat you give your relatives, friends, husband, or wife can help you know yourself better. Also, what they give you can tell you something about their personality. Most gift-giving (and getting) shows nothing more than the spirit of love and friendship. But it is possible to form some associations between the kinds of things bought and the people who buy them. Here is guide to who gives what-and why.The clothes you wear tell something about your personality. They tell the world not only how you want to be seen but how you see yourself as well. When someone gives you something to wear that agrees with your self-image, they’re saying, “I agree with you. I like you the way you are.” Such a gift should be taken as a form of compliment. On the other hand, a gift of clothing that does not match your personality could be an insult to your character.Making something by hand has become the exception in many countries today — so much so that giving a homemade gift is sometimes considered unusual. If you receive a homemade gift, you’re lucky. It may not be made perfectly, but it will show a certain quality of love. People who give homemade gifts may be very generous because they’ve given time and emotion.A person who thinks of food when thinking of a gift is a good example of what warmth means. Whether you give a box of chocolates, a bag of oranges, or a ball of cheese, all carry the same message of comfort and support.51. The first paragraph is written mainly to tell readers that .A. gifts should be given to relatives and friendsB. gifts can show friendshipC. gifts can tell you something about the gift-giverD. gifts can show generosity52. A person who likes the self-image of another person will give the latter .A. a gift that matches the character of the giverB. a gift that was made at home by the giverC. beautiful clothes to compliment the receiverD. a gift that agrees with the personality of the receiver53. According to the passage, people are thought to be very generous if they give .A. gifts made by handB. a gift of clothingC. an object that shows warmthD. a thing not found in one’s country54. What kind of message is communicated by a gift for food?A. GenerosityB. SupportC. CreativityD. Diversity55. The purpose of the passage is to .A. describeB. narrateC. analyzeD. persuade机密★启用前2011年天津市高等院校“高职升本科”招生统一考试英语第Ⅱ卷(非选择题共55分)注意事项：1．答第Ⅱ卷前，考生须将密封线内的项目填写清楚。
天津专接本2012软件工程——应用题
1.某医院计划开发一套以计算机系统为中心的ICU（重症监护室）监护系统。
该系统的基本要求是：系统可以随时接收ICU中每个患者的生理信号（血氧饱和度、体温、血压、ECG 心率），定时记录安全范围时系统将向值班的护士发出警告信息；此外，护士还可以根据需要使用该系统打印出制定患者的病情报告。
根据题目的已知条件，将下列数据流图和数据字典卡片补充完整。
2.已知某工厂的采购部每天需要一张订货报表，报表按零件编号排序，表中列出所有需要再次订货的零件。
对于每个需要再次订货的零件应该列出下述数据：零件编号、零件名称、订货数量、价格、主要供应者、次要供应者。
零件入库或出库称为事务，仓库管理员通过放在仓库中的CTR终端把事务输入到给定货系统。
当某种零件的库存数量少于库存量临界值时就应该通过定货报表通知采购员再次定货。
根据题目的已知条件，将下列数据流图和数据字典卡片补充完整。
3.银行计算机储蓄系统的工作过程大致如下：储户填写的存款单或取款单由业务员键入系统，如果是存款则系统记录存款人姓名、住址、身份证号码等存款信息，并打印出存款单给储户；如果是取款且存款时留有密码，则系统首先核对储户密码，若密码正确或存款时未留密码，则系统计算利息并打印出利息清单给储户。
要求：用数据流图描述本系统的功能。
4.考虑一个修改磁带上主文件的系统。
文件管理员把修改信息穿孔系统读入穿孔卡片上的信息并按照记录号把修改信息顺序排列好。
个读入主文件上的记录，根据记录上的校验码核对每个读入的记录的记录，按照修改信息修改余下的记录，产生的新文件存储在磁盘统输入一份修改报告供文件管理员参阅。
要求：分层次画出上述主统的数据流图。
5．某货运站的收费标准如下：若收件地点在本省，则快件每公斤5元，慢件每公斤3元。
若收件地点在外省，则在20公斤以内（包括20公斤）快件每公斤7元，慢件每公斤5元：当超过20公斤时，快件每公斤9元，慢件每公斤7元。
绘制确定收费标准的判定表和判定树。
天津大学10112学期 课程表
年级: 2008 专业: 测控技术与仪器 班级: 1班
第1、2节
精密测试理论与技术B
1-8周：王鹏 讲师
9-16周：钟莹副教授
嵌入式系统技术杜振辉1 Nhomakorabea8周 2节
测控电路（含传感器）
1-4周：
黄银国 讲师
5-16周：
赵美蓉 教授
工程光学实验
王强 工程师
1-16周 4节
第3、4节
嵌入式系统技术
杜振辉
1-8周 2节
现代控制系统工程（双语）
丹特
1-12周 2节
工程光学（2）
刘宏利 副教授
1-16周单周 2节
第5、6节
仪器制造工艺
郭敬滨 副教授
1-12周 2节
精密测试理论与技术B
1-8周：
王鹏 讲师
9-16周：
钟莹副教授
工程光学（2）
刘宏利 副教授
1-16周 2节
第7、8节
测控电路（含传感器）
1-4周：
黄银国 讲师5-16周：
赵美蓉 教授
第9、10节
微纳加工技术(双语)
房丰洲教授
1-8周 3节
毛泽东思想和中国特色社会主义理论体系概论
徐锦中 副教授
1-14周 3节
学分：
精密测试理论与技术：3.5
嵌入式系统技术：1.5
微纳加工技术：1.5
现代控制系统工程：1.5
仪器制造工艺：1.5
测控电路（含传感器）：3.5
毛泽东思想和中国特色社会主义理论体系概论：6
工程光学：2.5
工程光学实验：0.5
工程光学实验没有考试。
考试时间：
嵌入式系统技术：4月13日
天津高考数学模拟试题(新课程含详解答案)(3)
天津高考数学模拟试题（3）一、选择题（共8小题；共40分）1. 设函数的定义域为，函数的定义域为，则A. B. C. D.2. 已知，满足约束条件则的最小值为A. B. C. D.3. 我国古代名著《庄子天下篇》中有一句名言“一尺之棰，日取其半，万世不竭”，其意思为：一尺的木棍，每天截去一半，永远都截不完，现将该木棍依此规律截取，如图所示的程序框图的功能就是计算截取天后所剩木棍的长度（单位：尺），则①②③处可分别填入的是A. ①?；②；③B. ①?；②；③C. ①?；②；③D. ①?；②；③4. 已知命题，命题，，则成立是成立的A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 即不充分也不必要条件5. 已知函数是定义在上的奇函数，且在区间上单调递增，若，则的取值范围是A. B. C. D.6. 已知函数在一个周期内的图象如图所示，则A. B. C. D.7. 已知双曲线：的左焦点为，，在双曲线上，是坐标原点，若四边形为平行四边形，且四边形的面积为，则双曲线的离心率为A. B. C. D.8. 在平行四边形中，，，为的中点．若，则的长为A. B. C. D.二、填空题（共6小题；共30分）9. 已知，为虚数单位，若为实数，则的值为．10. 已知，则的展开式中常数项为．11. 已知三棱锥的所有棱长都为，则该三棱锥的外接球的体积为．12. 在平面直角坐标系中，曲线的参数方程为为参数，以坐标原点为极点，轴的非负半轴为极轴建立极坐标系，直线的极坐标方程为，，若曲线上恰有个点到直线的距离等于，则实数．13. 若正实数，满足，则的最大值为．14. 已知函数．①当时，函数的零点个数为；②如果函数恰有两个零点，那么实数的取值范围为．三、解答题（共6小题；共80分）15. 在中，内角，，所对的边分别为，，．已知．（1）求角的大小；（2）设，，求和的值．16. 在研究寨卡病毒（Zika virus）某种疫苗的过程中，为了研究小白鼠连续接种该疫苗后出现Z症状的情况，做接种试验，试验设计每天接种一次，连续接种天为一个接种周期．已知小白鼠接种后当天出现Z症状的概率为，假设每次接种后当天是否出现Z症状与上次接种无关．（1）若出现Z症状即停止试验，求试验至多持续一个接种周期的概率；（2）若在一个接种周期内出现次或次Z症状，则这个接种周期结束后终止试验，试验至多持续个周期．设接种试验持续的接种周期数为，求的分布列及数学期望．17. 在正四棱柱中，，分别是，的中点，为上任一点，与底面所成角的正切值是．（1）求证；（2）确定点的位置，使面，并说明理由；（3）求二面角的余弦值．18. 已知数列的前项和为，且满足 .（1）求证：数列为等比数列；（2）若，求的前项和 .19. 在平面直角坐标系中，点到两点，的距离之和为，设点的轨迹为曲线．（1）写出的方程；（2）设过点的斜率为的直线与曲线交于不同的两点，，点在轴上，且，求点纵坐标的取值范围．20. 已知函数，．（1）求的最小值；（2）求证：；（3）若，求的最小值．答案第一部分1. D2. D 【解析】作出，满足约束条件表示的平面区域，如图所示的阴影部分：设可得，则表示直线在轴上的截距，截距越小，越小，由题意可得，当经过点时，最小，由解得即，此时．3. B 【解析】程序运行过程中，各变量值如表所示：第次循环：，，第次循环：，，第次循环：，，依此类推，第次循环：，，此时不满足条件，退出循环，其中判断框内①应填入的条件是：?，执行框②应填入：，③应填入：．4. A 【解析】命题等价于．命题，对，，必有或，则，所以命题是命题的充分不必要条件．5. C【解析】因为函数在上为奇函数，所以，所以，因为在上单调递增，所以，解得．6. A 【解析】由图知，且，则周期，所以．因为，则，从而．所以，故．7. D 【解析】双曲线：焦点在轴上，设，，由四边形为平行四边形，所以．因为四边形的面积为，所以丨丨，即丨丨，所以，代入双曲线：，整理得：，由，所以，由，解得：．8. C 【解析】因为是平行四边形，为的中点，所以，，所以又，，，所以，解得或（舍）．第二部分9.10.【解析】，，令，则，展开式中常数项为．11.【解析】如图，构造正方体．因为三棱锥的所有棱长都为，所以正方体的棱长为．所以该正方体的外接球的半径为．易知三棱锥的外接球就是正方体的外接球，所以三棱锥的外接球的半径为．．所以三棱锥的外接球的体积为球12.【解析】曲线的方程化为，圆心，，直线的方程化为．若曲线上恰有个点到直线的距离等于，则圆心到直线的距离等于，即，所以．13.【解析】由题意可得：，故，而，即，所以的最大值为，所以的最大值为．14. ，第三部分15. （1）在中，由正弦定理，可得，又由，得，即，可得．又因为，可得．（2）在中，由余弦定理及，，，有，故．由，可得． 因为 ，故．因此，．所以，． 16. （1） 试验至多持续一个接种周期的概率（2） 随机变量 ，设事件 为“在一个接种周期内出现 次或 次Z 症状”，则所以 的分布列为的数学期望17. （1） 因为 是正四棱柱所以 是正方形，设其边长为 ， 是 与底面所成的角，而 ， 所以 ．以 为原点， ， ， 所在直线分别为 轴， 轴， 轴，建立如图所示的直角坐标系．则 ， ， ， ， ， ， ， ， ， ， 设， ， ， 所以 ．（2） 由 知，使 面，只需 ，只需，所以，即时，面．（3）由知，当时，是平面的一个法向量，由题意可得，是平面的一个法向量，设二面角的大小为，则，二面角的余弦值为．18. （1）当时，，解得；当时，，，两式相减得，化简得，所以数列是首项为，公比为的等比数列.（2）由（Ⅰ）可得，所以，下提供三种求和方法供参考：[错位相减法]两式相减得所以数列的前项和 .[并项求和法]当为偶数时，，；当为奇数时，为偶数，；综上，数列的前项和为偶数为奇数.[裂项相消法]因为所以所以数列的前项和 .19. （1）由题设知，根据椭圆的定义，的轨迹是焦点为，，长轴长为的椭圆，设其方程为，则，，，所以的方程为．（2）依题设直线的方程为，将代入并整理得，，，设，，则，，设的中点为，则，，即，因为，所以直线的垂直平分线的方程为，令解得，，当时，因为，所以；当时，因为，所以；综上得点纵坐标的取值范围是．20. （1）的定义域是，，令，解得：，令，解得：，所以在递减，在递增，所以的最小值是；（2），，令，解得：，令，解得：，故在递增，在递减，故，由（），故；（3），即．所以，令，，若，则，为增函数，无最大值；若，由，得，由，得，所以在上为增函数，在上为减函数，所以．所以，所以．设．则，由，得；由，得．所以．所以的最小值为．。
2011天津高职升本计算机C语言程序设计(answer)
高职升本计算机C 语言程序填空题1. 阅读以下程序并填空。
以下程序的功能是：输出三位正整数中能被13整除的数 #include <stdio.h>main() { int n;for( n=100 ; n<=999 ;n++) if(n%13!=0) continue ;else printf("%d\n",n);}2. 阅读以下程序并填空。
以下程序的功能是：输出100以内能被3整除且个位数为6的所有整数#include <stdio.h> main(){ int i,j;for(i=0; i<=9 ;i++) { j= i*10+6 ;if(j%3!=0) continue; else printf("%d\n",j);} }3. 阅读以下程序并填空。
以下的程序功能是：求101至999之间所有能被13整除的整数之和和个数#include <stdio.h> main(){ int i,cnt; float sum=0; i=101; cnt=0; while( i<=999 ){ if( i%13==0 ){ sum+=i; cnt++; } i++ ; }printf("sum=%f,cnt=%d\n",sum,cnt);} 4. 阅读以下程序并填空。
该程序的功能是：用递归的方法求菲波那契数列2,2,4,6,10,16,26,42,68,110，……的第10项 #include <stdio.h> long fib(int n){ if(n>= 3 )return fib(n-1)+fib(n-2) ;elsereturn 2 ; }main(){ printf("%ld\n",fib(10)); }5. 阅读以下程序并填空。
该程序的功能是：用递归法求:n ++++ 321#include <stdio.h> long Sum(int n){ if(n> 1 )return n+Sum(n-1) ;elsereturn 1 ;}6. 阅读以下程序并填空。
英语高职升本科真题
机密*启用前2010年天津市高等院校“高职升本科”招生统一考试英语本试卷分第1卷(选择题)和第Ⅱ卷(非选择题)两部分。
第1卷1至8页，第Ⅱ卷9至10页。
共150分。
考试时间120分钟。
第I卷(选择题共95分)注意事项：1．答第1卷前，考生务必将自己的姓名、准考号、考试科目涂写在答题卡上，并将本人考试用条形码贴在答题卡的贴条形码处。
2．每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑。
如需改动，用橡皮擦干净后，再选涂其他答案标号，答在试卷上的无效。
3．考试结束，监考入将本试卷和答题卡一并收回。
PartI. Grammar and Vocabulary (15 points)Directions:There are 15 sentences, each witha blank. Under each sentence, there are fourchoices marked A, B, C and D. Read the sentences and the choices carefully and then choose the one that best completes the sentence.1. A: How often do you eat out?B: , but usually once a week.A. Have no ideaB. As usualC. It dependsD. Generally2. I was annoyed by my friend who came late for our appointment but did not botherto ask how long I .A. was waitingB. had been waitingC. waitedD. have waited3. It was very of them to share the meal with their out-of-work neighbors.A. generousB.gentleC. geniusD. general4. If you have any complaints the service, you should write to the Hospital Administrator.A. aboutB. toC. forD. with5. A: Professor Lee, can I see you about my presentation this afternoon?B:A. No, never mindB. Oh, that’s my pleasureC. Fine. Please come by Bus No.8D. Yes. Is 2 o’clock all right?6. But for your help, we in the experiment.A. will never succeedB. mustn’t have succeededC. couldn’t have succeededD. shouldn’t have succeeded7. A man of humble , Lincoln eventually became President of the U.S.through his own efforts.A. sourceB. resourceC. originD. head8. In business, a man should not be judged by what he eatswith whom he eats.A. as well asB. such asC. much asD. so much as9.The coat I am wearing now costs about that one over there.A. twice as much asB. twice as many asC.as twice as manyD. as twice as much10.In Australia the Asians have made their influence in business, large or small.A. to be feltB. feltC.feelingD. feel11. Do you remember that our speed is 60 mph on the highway and Big Brother is watchingyou through his camera in some areas.A. controlB. conditionC. permissionD. limit12. he tried to pass the driving test, he still failed the second time.A. As hardB. Though hardC. Hard asD. No matter hard13. Mobile Phones are proved to with flight instruments and have a negative effect on flightsafety.A. interruptB. interfereC. troubleD. disturb14. That novel is said into over 12 languages by the end of last year.A. to be translatedB. being translatedC. having been translatedD. to have been translated15. John Smith, being a diligent student, never refuses to the responsibilities that are assignedto him.A. take inB. take onC. take downD. take offPart II. Cloze Test (30 points)Directions: There are 20 blanks in the following passage. For each blank there are four choicesmarked A, B, C andD. Read the passage' carefully and choose theone that fits right into thepassage.Have you ever heard the old saying, “Never judge a book by its cover”? This is a good rule to 16 when trying to judge the intelligence of others.Some people have 17 that shine only in certain 18 .A young man with unusual 19 in creative writing may find himself 20 in the presence of a pretty girl. He 21 awkwardly for words and does not talk smoothly. But don't make the 22 of thinking him stupid. 23 a pen and a paper, he can express himself very well.Other people may 24 you into overestimating (过高估计) their intelligence by 25up a good appearance. A student who listens attentively and 26 notes in class is bound to make a favorable impression 27 their teachers. But when it 28 to exams, he may score around the 29 of the class.In sum, the 30 idea of what is said above is that you can't judge someone 31 appearance. The only way to determine a person's intelligence is to get to know him. Then youcan observe 32 he reacts to different situations. The 33 situations you observe, the more 34 your judgment is likely to be. So 35 your time. Don't judge a book by its cover.16. A. followB. take C. watchD. lead17. A. heartsB. heads C. mindsD. hands18. A. conditions B. situations C.surroundings D. occasions19. A. presentB. hand C. penD. gift20. A. motionlessB. hopeless C. speechlessD. helpless21. A. searches B. seeks C. callsD. studies22. A. shortcomingB. fault C. mistake D. wrong23. A. From B. withC. inD. by24. A. get B. make C. throwD. fool25. A. holdingB. keeping C. standing D. putting26. A. takesB. readsC. seesD. copies27. A. ofB. onC. inD. up28. A. turnsB. comesC. getsD. leads29. A. top B. middle C. centerD. bottom30. A. onlyB. majorC. mainD. principle31. A. inB. with C. byD. for32. A. howB. what C. whenD. why33. A. most B. more C. muchD. many34. A. accurateB. important C. actualD. exact35. A. count B. value C. cherish D. takePart III. Reading Comprehension ( 50 points )Directions:There are four passages in this part. Each passage is followed by a number ofquestions for comprehension. For each of them there are four choices marked A, B, C and D.Choose the one that fits best according to the information given in the passage you have justread.Passage OneInternet shopping is a new way of shopping．Nowadays, you can shop for just about anything from your armchair．All you need is a computer which is linked to the Internet．Shopping on the Internet is becoming increasingly popular．People can shop for a variety of products on the Internet．Physical products include items such as books, CDs, clothes and foods．These types of products are the most common purchases through the Internet．You can also buy information products such as on—line news or magazine stories, or you can download computer software through the Internet．Services such as booking airline tickets, reserving hotels or renting cars are also available on theInternet．You can also go shopping on the Internet for entertainment services and take part in on-line games．Internet shopping offers a number of benefits for the shopper．The most important advantage is convenience．You can shop when you like as the on—line shops are open 24 hours a day and you don’t have to queue with other shoppers at the checkout counters．Secondly, it is easy to find what you are looking for on the Internet．Even out-of-print books may be ordered on line．Finally, it is often cheaper to buy goods through the Internet, and you can tell the shop exactly what you want．The main disadvantage of Internet shopping is that you cannot actually see the products you are buying or check their quality. Some people are also worried about paying for goods using credit cards, so Internet companies are now finding ways to make on-line payment safe．Internet shopping is sure to become more and more popular in the years ahead．It promises to change the way we buy all kinds of things--from tonight’s di nner to a new car．36.The underlined phrase“physical products”in Paragraph 2refers to ．A．things that can be seen or feltB．things useful for health careC．things that help you keep fitD．things connected with sports37．On-line news and magazine stories are ______．A．not yet available on the InternetB．everywhere on the internet and free to downloadC．information products available on the InternetD．the most popular products on the Internet38．The most important advantage about Internet shopping is the______．A. reasonable priceB. quality of the goodsC. speed of deliveryD. convenience it brings to you39．Which of the following disadvantages of Internet shopping is NOT mentioned?A. Paying by using credit cards may not be safeB. Customers cannot actually see the productsC. Customers cannot check the product’s qualityD. People may have few opportunities to meet their friends40. What is the author’s attitude towards Internet shopping?A. CriticalB. NeutralC. AnnoyingD. NegativePassage TwoDo you find getting up in the morning so difficult that it's painful?This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes in the morning. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues as: “Get up, John! You will be late for work again!” The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening. Much family quarrelling ends whenmembers of the family realize what they have different energy cycle.You can't change your energy cycle, but you can learn to make your life fit it better. Habit can help, Dr. Kleitman believes. If our energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won't change your cycle, but you'll get up steam and work better at your low point.Get off to a slow start, which saves your energy. Get up with a leisurely yawn(打哈欠) and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.41. If a person finds getting up early a problem, most probably .A. he is a lazy personB. he is not sure when his energy is lowC. he refuses to follow his own energy cycleD. his energy peak is in the afternoon or evening42. Which of the following may lead to family quarrels according to the passage?A. Unawareness of energy cycles.B. Discovery of energy cycles.C. A change in a family member's energy cycle.D. Attempts to control a family member’s energy cycle.43. Based on Dr.Kleitman, to work better at his low point in the morning, one should.A. go to bed earlierB. get up earlier than usualC. overcome his lazinessD. change his energy cycle44.Getting up with a yawn and stretch will _ .A. enable you to concentrate on your workB. help you to control your temper in the dayC. help to keep your energy for the day's workD. keep your energy cycle under control all day45. Which of the following statements is NOT true?A. Children have energy cycles, too.B. Everyone knows exactly about his energy cycleC. Habit helps a person adaptto his own energy cycle.D. A slow s tart in the morning helps tosave one’s energy.Passage ThreeDisneyland is a great family destination, yet children are so tempted at the park by the wide choices of food and gifts that a day intended for family fun sometimes turns out to be unpleasant. While it’s a parent’s job to say “no” at appropriate time, saying no during a special day intended for family togetherness can definitely spoil the fun for both adult and child.When our children were in early elementary school, we came up with a plan that took the “yes” and “no” spending decision out of our hands, and placed it into theirs.We were off to Disneyland, and during previous visits our son would keep asking us to by souvenirs(纪念品) from various shops. Before going to the park, we explained that we would be giving them each their share of the money, and it would be totally their decision how to spend it. But once their portion was gone, it was gone.It was interesting how differently our two children budgeted their portion. Our daughter spent her portion on her food and drink, and managed to buy a snack and souvenirs. Our son, who usually found something he had to have at every corner, turned into a nervous miser. At lunch time, we wouldn’t even order a soda, and when he saw something he wanted to buy, he studied it until he decided he didn’t need it.By the end of the day, our daughter had spent her share, and seemed quite pleased with the choices he had made. Our son, who had spent very little, was suddenly frantic(狂乱的) to buy something (or anything) with his remaining cash. I felt a little sorry for him, because while we had an enjoyable day, free from the responsibility of monitoring our children’s spending, his day was spent dealing with the consequences of his choices.46. What does the passage mainly talk about?A. The family budgetB. Spending responsibilityC. Having fun at DisneylandD. Great family destination47. What is the best way to reduce the family’s spending while going out?A. Parents decide what to buy for their childrenB. Children themselves decide to buy whatever they wantC. Parents say “no” whenever their children ask to buy somethingD. Children are given a sum of money and they decide what to buy.48. What did the author’s son do with his own money at Disneyland?A. He has hesitant to spend his own money.B. He managed to buy things at every cornerC. He was happy and free with his moneyD. He used up his money quickly49. Which of the following is NOT true?A. The parents had an enjoyable dayB. The daughter had great experiencesC. The son and daughter spent their money quicklyD. The family learned something from the experience.50. Which word may express the author’s tone in describing his son?A. WorryB. ReliefC. RegretD. ApprovalPassage FourThe government may control prices when where is a problem such as rapidly increasing rents or a rise in the cost of living. When the government controls prices，there is no longer a normal relationship between the price of a product and the quantity consumers will buy. Government controls may help in an emergency. However, some economists believe that controls can have negative effects over a long period of time.In cities with rent control, the city government sets the maximum rent that a landlord can charge for an apartment. Supporters of rent control argue that it protects people who are living in apartments. Their rent cannot increase。
【精品高考数学】[2020年天津高考仿真模拟卷-数学]+答案
2020年天津高考仿真模拟卷数学 2020.4满分：150分 考试时间：120分钟第Ⅰ卷（选择题 共60分）一、选择题：本题共9小题，每小题5分，共45分．在每小题给出的四个选项中，只有一项是符合题目要求的．1．已知集合{|lg(2)}A x y x ==-，(2,3)B =-，则A B =I A ．(2,2)(2,3-U ） B ．(2,2)-C ．(2,3)D ．[2,3)2．“04a ≤≤”是“实系数一元二次方程20x ax a ++=无实根”的 A ．必要不充分条件 B ．充分不必要条件 C ．充要条件D ．既不充分也不必要条件3．已知ln3x =，4log 2y =，12z e -=，则A ．x y z <<B ．z x y <<C ．z y x <<D ．y z x <<4．构造如图所示的图形，它是由3个全等的三角形与中间的一个小等边三角形拼成的一个大等边三角形，设2BD AD =，则DEF V 与ABC V 的面积之比为A ．12B ．13C ．15D ．175．对大于1的自然数 m 的三次幂可用奇数进行以下形式的“分裂”：3331373152{3{94{5171119L ，，，仿此，若3m 的“分裂数”中有一个是73，则m 的值为 A ．8 B ．9 C ．10 D ．116．设曲线12x y x +=-在点()1,2-处的切线与直线0ax by c ++=垂直，则ab=A ．13B ．13-C ．3D ．-37．设函数()sin()(0,0)f x A x A ωϕω=+>>的部分图象如图所示，则函数()3()4y f x f x π=++的单调增区间为A ．[,]()44k k k Z ππππ-+∈ B ．[,]()63k k k Z ππππ-+∈C ．[,]()36k k k Z ππππ-+∈ D ．[,]()2k k k Z πππ+∈8．已知三棱锥 P ABC -的四个顶点在球O 的球面上，PA PB PC ==，且两两垂直，ABC V 是边长为2的正三角形，则球O 的体积为A ．86πB ．46πC 6πD 69．已知函数2()43f x x x =-+.若方程2[()]()0f x bf x c ++=恰有七个不相同的实根，则实数b 的取值范围是 A ．()2,0-B ．()2,1--C ．()0,1D ．()0,2第Ⅱ卷二、填空题：本题共6个小题，每小题5分，共30分． 10．若复数z 满足2z i i ⋅=-，则z =_______．11．某医院急救中心随机抽取20位病人等待急诊的时间记录如下表： 等待时间/分 [)0,5[)5,10[)10,15[)15,20[]20,25频数48521用上述分组资料计算出病人平均等待时间的估计值x =______，病人等待时间方差的估计值2s =______.12．已知向量a v 、b v 满足1a =v，||2b =v ，且它们的夹角为120°，则向量2a b +v v 与向量a v 夹角的余弦值为________13．已知球、母线和直径相等的圆柱、正方体，它们的体积依次为1V 、2V 、3V ，若它们的表面积相等，则222123::V V V =________（结果保留π）.14．已知0x >，0y >，141x y+=，不等式280m m x y ---<恒成立，则m 的取值范围是_______．（答案写成集合或区间格式）15．某省现行的高考招生制度规定除语、数、英之外，考生须从政治、历史、地理、物理、化学、生物、技术这7门高中学考科目中选择3门作为高考选考科目，成绩计入高考总分.已知报考某高校A 、B 两个专业各需要一门科目满足要求即可，A 专业：物理、化学、技术；B 专业：历史、地理、技术.考生小李今年打算报考该高校这两个专业的选考方式有______ 种.（用数字作答）四、解答题：本大题共5小题，共75分．解答应写出文字说明、证明过程或演算步骤． 16．在ABC V 中，角A ，B ，C 所对的边分别为a ，b ，c ，且满足222a c b ac +=-．()I 求角B 的大小；()II 若BAC ∠的平分线AD 交BC 于D ，1AD ==，求sin BAC ∠的值．17．如图，在四棱锥P ABCD -中，PBC V 是等腰三角形，且3PB PC ==.四边形ABCD 是直角梯形，//AB DC ，AD DC ⊥，5AB =，4AD =，3DC =.AB平面PDC;（Ⅰ）求证://-的体积;（Ⅱ）当平面PBC⊥平面ABCD时，求四棱锥P ABCDP A B C D中找出两个点，使得这两点所在的直线与直线（Ⅲ）请在图中所给的五个点,,,,BC垂直，并给出证明．．.18．某超市计划按月订购一种饮料，每天进货量相同，进货成本每瓶3元，售价每瓶5元，.根据往年销售经验，每天需求量与当天最高每天未售出的饮料最后打4折当天全部处理完℃有关.如果最高气温不低于25，需求量为500瓶；如果最高气温位于区间气温(单位：)[)20,25，需求量为300瓶；如果最高气温低于20，需求量为100瓶.为了确定六月份的订购计划，统计了前三年六月份各天的最高气温数据，得到下面的频数分布表： 最高气温 [)10,15[)15,20[)20,25[)25,30[)30,35[)35,40天数216362574以最高气温位于各区间的频率代替最高气温位于该区间的概率．(Ⅰ)求六月份这种饮料一天的需求量(X 单位：瓶)的分布列，并求出期望EX ； (Ⅱ)设六月份一天销售这种饮料的利润为(Y 单位：元)，且六月份这种饮料一天的进货量为(n 单位：瓶)，请判断Y 的数学期望是否在n EX =时取得最大值？19．已知椭圆2222:1()x y C a b o a b+=>>的焦距为2，过右焦点和短轴一个端点的直线的斜率为1-，为坐标原点．（Ⅰ）求椭圆的方程；（Ⅱ）设斜率为的直线与椭圆C 相交于,A B 两点，记AOB ∆面积的最大值为k S ，证明：12S S =20．已知函数()()32111323a f x x a x x =-++-． （1）若函数f （x ）的图象在点（2，f （2））处的切线方程为9x ﹣y +b ＝0，求实数a ，b 的值； （2）若a ≤0，求f （x ）的单调减区间；（3）对一切实数a ∈（0，1），求f （x ）的极小值的最大值．2020年天津高考仿真模拟卷数学 2020.4满分：150分 考试时间：120分钟第Ⅰ卷（选择题 共60分）一、选择题：本题共9小题，每小题5分，共45分．在每小题给出的四个选项中，只有一项是符合题目要求的．1．已知集合{|lg(2)}A x y x ==-，(2,3)B =-，则A B =I A ．(2,2)(2,3-U ） B ．(2,2)-C ．(2,3)D ．[2,3)【解析】因为(){}|lg 22A x y x ∞==-=+（，），所以()2,3A B ⋂=，故选C.2．“04a ≤≤”是“实系数一元二次方程20x ax a ++=无实根”的 A ．必要不充分条件 B ．充分不必要条件 C ．充要条件D ．既不充分也不必要条件【解析】实系数一元二次方程20x ax a ++=无实根”⇔24004a a a ∆=-<⇔<<若“04a ≤≤”成立，“04a <<”不一定成立 反之，若“04a <<”成立，“04a ≤≤”一定成立所以“04a ≤≤”是“实系数一元二次方程20x ax a ++=无实根”的必要不充分条件. 所以A 选项是正确的. 故选A3．已知ln3x =，4log 2y =，12z e -=，则A ．x y z <<B ．z x y <<C ．z y x <<D ．y z x <<【解析】1241log 212y e -==<=<，ln3ln 1e >=，∴y z x <<． 故选：D.4．构造如图所示的图形，它是由3个全等的三角形与中间的一个小等边三角形拼成的一个大等边三角形，设2BD AD =，则DEF V 与ABC V 的面积之比为A ．12B ．13C ．15D ．17【解析】2,BD AD AF BD ==Q ，2AF AD ∴=，即点D 为AF 的中点，由余弦定理得：2222cos120AB AD BD AD BD ︒⋅-=+，解得7AB AD =， )22ABC1()sin 601217sin 6072DEF AD S S ︒︒∴==V V ， 故选D5．对大于1的自然数 m 的三次幂可用奇数进行以下形式的“分裂”：3331373152{3{94{5171119L ，，，仿此，若3m 的“分裂数”中有一个是73，则m 的值为 A ．8B ．9C ．10D ．11【解析】由题意可得3m 的“分裂数”为m 个连续奇数，设3m 的“分裂数”中第一个数为m a ，则由题意可得：3273422a a -=-==⨯，43137623a a -=-==⨯，…，12(1)m m a a m --=-，将以上2m -个式子叠加可得2(422)(2)(1)(2)2m m m a a m m +---==+-，∴22(1)(2)1m a m m a m m =+-+=-+，∴当9m =时，73m a =，即73是39的“分裂数”中第一个数， 故选B 6．设曲线12x y x +=-在点()1,2-处的切线与直线0ax by c ++=垂直，则ab= A ．13B ．13- C ．3 D ．-3【解析】依题意()()()'2221322x x y x x --+-==--，'1|3x y ==-，由于曲线12x y x +=-在点()1,2-处的切线与直线0ax by c ++=垂直，所以()131,3a a b b ⎛⎫-⋅-=-=- ⎪⎝⎭. 故选：B7．设函数()sin()(0,0)f x A x A ωϕω=+>>的部分图象如图所示，则函数()3()4y f x f x π=++的单调增区间为A ．[,]()44k k k Z ππππ-+∈ B ．[,]()63k k k Z ππππ-+∈C ．[,]()36k k k Z ππππ-+∈ D ．[,]()2k k k Z πππ+∈【解析】由图像可知2A =，1,4612T T πππ⎛⎫=--= ⎪⎝⎭，因为2T πω=，得到2ω= 代入,212π⎛⎫-- ⎪⎝⎭得sin 16πϕ⎛⎫-+=- ⎪⎝⎭，得23k πϕπ=-，取0k =，则3πϕ=-所以函数()2sin 23f x x π⎛⎫=- ⎪⎝⎭，2cos 243f x x ππ⎛⎫⎛⎫+=- ⎪ ⎪⎝⎭⎝⎭，因此()34y f x x π⎛⎫=+⎪⎝⎭2sin 223sin 2343x x πππ⎛⎫⎛⎫⎛⎫-++- ⎪ ⎪ ⎪⎝=⎭⎝⎭⎝⎭ 2sin 223sin 22sin 223233233x x x x πππππ⎛⎫⎛⎫⎛⎫⎛⎫-+-+=-+- ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭=4sin 233x ππ⎛⎫=-+ ⎪⎝⎭4sin2x =，则22222k x k ππππ-≤≤+，k Z ∈，得4sin 2y x =的单调递增区间，得44k x k ππππ-≤≤+，k Z ∈.故选A 项.8．已知三棱锥 P ABC -的四个顶点在球O 的球面上，PA PB PC ==，且两两垂直，ABC V 是边长为2的正三角形，则球O 的体积为A ．86πB ．46πC ．6πD ．62π 【解析】由题中条件易得2PA PB PC ===，从而球O 的半径36222r =⨯=，体积3463V r ππ==， 故选：C ．9．已知函数2()43f x x x =-+.若方程2[()]()0f x bf x c ++=恰有七个不相同的实根，则实数b 的取值范围是 A ．()2,0-B ．()2,1--C ．()0,1D ．()0,2【解析】由题意，画出函数2()43f x x x =-+的图象，如图所示，可得()(1)(3)0,(2)1,0f f f f x ===≥，因为方程2[()]()0f x bf x c ++=恰有七个不同的实根，则方程20t bt c ++=的其中一个根为1，另一根在(0,1)内，设()2g t t bt c =++，则满足(1)0g =且(0)0g >且()02b g -<且012b<-<，即10b c ++=且0c >且2()()022b b b c -+⋅-+<且012b<-<，解得21b -<<-，即实数b 的取值范围是()2,1--， 故选B.第Ⅱ卷二、填空题：本题共6个小题，每小题5分，共30分．10．若复数z 满足2z i i ⋅=-，则z =_______．【解析】22.12,iz i i z i z i-⋅=-∴==-∴=Q 11．某医院急救中心随机抽取20位病人等待急诊的时间记录如下表：用上述分组资料计算出病人平均等待时间的估计值x =______，病人等待时间方差的估计值2s =______.【解析】（1） 2.547.5812.5517.5222.519.520x ⨯+⨯+⨯+⨯+⨯==；（2）222222(2.59.5)4(7.59.5)8(12.59.5)5(17.59.5)2(22.59.5)128.520s -⨯+-⨯+-⨯+-⨯+-⨯==12．已知向量a v 、b v 满足1a =v，||2b =v，且它们的夹角为120°，则向量2a b +vv 与向量a v 夹角的余弦值为________【解析】2a b +===r r ()112122cos 2,2a b a a b a a b a⎛⎫+- ⎪+<+>====+r r r g g g r r r r r r g13．已知球、母线和直径相等的圆柱、正方体，它们的体积依次为1V 、2V 、3V ，若它们的表面积相等，则222123::V V V =________（结果保留π）.【解析】设球的半径为R ，圆柱底面半径为r ，正方体的棱长为a ， 由它们的表面积相等，则222466R r a ππ==，则222111::::466R r a ππ=， 即2223232321234::():(2):()6:4:3V V V R r a πππ==. 14．已知0x >，0y >，141x y+=，不等式280m m x y ---<恒成立，则m 的取值范围是_______．（答案写成集合或区间格式） 【解析】因为0x >，0y >，141x y+=，则144()()559y x x y x y x y ++=++≥+=，（当且仅当3,6x y ==时取等号），9x y +≥，不等式280m m x y ---<恒成立，即：28m m x y -<+只需2289,890m m m m -<--<，则19m -<<，则m 的取值范围是(1,9)-.15．某省现行的高考招生制度规定除语、数、英之外，考生须从政治、历史、地理、物理、化学、生物、技术这7门高中学考科目中选择3门作为高考选考科目，成绩计入高考总分.已知报考某高校A 、B 两个专业各需要一门科目满足要求即可，A 专业：物理、化学、技术；B 专业：历史、地理、技术.考生小李今年打算报考该高校这两个专业的选考方式有______ 种.（用数字作答）【解析】根据题意得到分情况：当考生选择技术时，两个专业均可报考，再从剩下的6门课中选择两科即可，方法有2615C =种；当学生不选技术时，可以从物理化学中选择一科，再从历史，地理选一科，最后从政治生物中选择一科，有2228⨯⨯=种方法；当学生同时选物理化学时，还需要选择历史，地理中的一科，有2中选择，当学生同时选择历史，地理时，需要从物理化学中再选择一科，也有2种方法，共有4种；最终加到一起共有：15+8+4=27种.四、解答题：本大题共5小题，共75分．解答应写出文字说明、证明过程或演算步骤． 16．在ABC V 中，角A ，B ，C 所对的边分别为a ，b ，c ，且满足222a c b ac +=-．()I 求角B 的大小；()II 若BAC ∠的平分线AD 交BC 于D ，1AD ==，求sin BAC ∠的值．【解析】()I Q 在ABC V 中，222a c b ac +=-．∴由余弦定理可得：2221cos 222a cb ac B ac ac +--===-，()0,B π∈Q ，23B π∴=()IIQ 由正弦定理可得：sin sin AD BDB BAD =∠， 31sin 12sin 423BD B BAD AD ⨯⋅∴∠===， ()0,BAD π∠∈Q ，BAC ∠的平分线AD 交BC 于D ，215cos 1sin BAD BAD ∴∠=-∠=， ()15sin sin 22sin cos 8BAC BAD BAD BAD ∴∠=∠=∠⋅∠=17．如图，在四棱锥P ABCD -中，PBC V 是等腰三角形，且3PB PC ==.四边形ABCD 是直角梯形，//AB DC ，AD DC ⊥，5AB =，4AD =，3DC =.（Ⅰ）求证://AB 平面PDC ;（Ⅱ）当平面PBC ⊥平面ABCD 时，求四棱锥P ABCD -的体积;（Ⅲ）请在图中所给的五个点,,,,P A B C D 中找出两个点，使得这两点所在的直线与直线BC 垂直，并给出证明．．. 【解析】（Ⅰ）证明：∵AB ∥DC ，且DC ⊂平面PDC ，AB ⊄平面PDC ， ∴AB ∥平面PDC ；（Ⅱ）解：取BC 中点D ，∵PB=PC ，∴PD ⊥BC ， 又平面PBC ⊥平面ABCD ，且平面PBC∩平面ABCD=BC ， ∴PD ⊥平面ABCD ，则PD 为四棱锥P ﹣ABCD 的高， 在底面直角梯形ABCD 中，由AB=5，AD=4，DC=3， 得()1435162ABCD S =⨯⨯+=，且224(53)25+-=又PB=PC=3，∴PD=223(5)2-=． ∴13216233P ABCD V -=⨯⨯=； （Ⅲ）解：图中PA ⊥BC ． 证明如下：由（Ⅱ）知，PD ⊥BC ，作CG ⊥AB ，在直角三角形CGB 中，可得cos 5CBG ∠=， 在三角形ADB 中，由余弦定理可得22255(5)25520AD =+-⨯⨯⨯=， 则AD 2+BD 2=AB 2， ∴AD ⊥BC ，又AD∩PD=D ，∴BC ⊥平面PAD ，则PA ⊥BC ．18．某超市计划按月订购一种饮料，每天进货量相同，进货成本每瓶3元，售价每瓶5元，每天未售出的饮料最后打4折当天全部处理完.根据往年销售经验，每天需求量与当天最高气温(单位：)℃有关.如果最高气温不低于25，需求量为500瓶；如果最高气温位于区间[)20,25，需求量为300瓶；如果最高气温低于20，需求量为100瓶.为了确定六月份的订购计划，统计了前三年六月份各天的最高气温数据，得到下面的频数分布表： 最高气温 [)10,15[)15,20[)20,25[)25,30[)30,35[)35,40天数216362574以最高气温位于各区间的频率代替最高气温位于该区间的概率．(Ⅰ)求六月份这种饮料一天的需求量(X 单位：瓶)的分布列，并求出期望EX ； (Ⅱ)设六月份一天销售这种饮料的利润为(Y 单位：元)，且六月份这种饮料一天的进货量为(n 单位：瓶)，请判断Y 的数学期望是否在n EX =时取得最大值？【解析】(Ⅰ)由题意知X 的可能取值为100，300，500，()2161000.290P X +===， ()363000.490P X ===，()25745000.490P X ++===，X ∴的分布列为：()1000.23000.45000.4340E X =⨯+⨯+⨯=．(Ⅱ)由题意知六月份这种饮料的进货量n 满足100500n ≤≤，当300500n ≤≤时，若最高气温不低于25，则532Y n n n =-=，若最高气温位于[)20,25，则()530023003900Y n n n =⨯+--=-， 若最高气温低于20，则()510021003300Y n n n =⨯+--=-，()()()20.49000.43000.24200.2E Y n n n n ∴=⨯+-⨯+-⨯=+，此时，500n =时，Y 的数学期望达到最大值，最大值为520元， 当100300n ≤≤时，若最高气温不低于25，则532Y n n n =-=， 若最高气温位于[)20,25，则532Y n n n =-=，若最高气温低于20，则()5100100300300Y n n =⨯---=-，()()()20.40.43000.260 1.4E Y n n n ∴=⨯++-⨯=+，此时，300n =时，Y 的数学期望达到最大值，最大值为480元，340n ∴=时，Y 的数学期望值为：4200.2340488+⨯=不是最大值， 500n =时，y 的数学期望达到最大值，最大值为520元．19．已知椭圆2222:1()x y C a b o a b+=>>的焦距为2，过右焦点和短轴一个端点的直线的斜率为1-，为坐标原点．（Ⅰ）求椭圆的方程；（Ⅱ）设斜率为的直线与椭圆C 相交于,A B 两点，记AOB ∆面积的最大值为k S ，证明：12S S =【解析】（Ⅰ）由题意，得椭圆的半焦距1c =，右焦点()1,0F ，上顶点()0,M b ，所以直线MF 的斜率03tan 1014b k π-===--，解得1b =，由222a b c =+，得22a =，所以椭圆的方程为2212x y +=.（Ⅱ）证明：设直线l 的方程为y kx m =+，其中12k =或，()1122,),,Ax y B x y （，由方程组22{12y kx mx y =++=得()222124220kxkmx m +++-=，所以2216880k m ∆=-+> ()*，于是有2121222422,1212km m x x x x k k --+==++ ， 所以()222222222422114821121212km m k AB k k m k k k --+⎛⎫=+-⨯=-+ ⎪+++⎝⎭，因为原点O 到直线y kx m =+的距离 21m d k=+所以()22221221212AOB S AB d m k m k ∆=⋅=-++ 222S =()22299AOB S m m ∆=- 当1k =时，()22233AOB S m m ∆=-232m =时AOB S ∆的最大值12S =，验证知()*成立；292m =当2k =时，所以当时AOB S ∆的最大值，验证知()*成立；所以12S S =。
2011年天津市中职接高职统一考试1
2011年天津市“三二分段”中职接高职统一考试语文一、单项选择题：在每小题的备选答案中选出一个正确答案，并将正确答案的代码填在题后的括号内。
(每题2分，共12分)1.下列词语中加点字的注音完全正确的一项是（）（2分）A. 自诩．（xǔ）倔．强（juâ）离间．（jiàn）故弄．玄虚（nòng）B. 伺．候（cì）国粹．（cuì）泥泞．（nìng）观其大略．（luâ）C. 濡．养（rú）停滞．（zhì）淆．乱（xiáo）浅尝辄．止（zhã）D. 沮．丧（zǔ）差．错（chà）窘．态（jiǒng）挥斥方遒．（qiú）2.下列词语中没有．．错别字的一项是（）（2分）A. 眼花缭乱不明一钱微不足道南辕北辄B. 豁然开朗固若金汤开卷有意破釜沉舟C. 断章取义支离破碎标新立异老太龙钟D. 咬文嚼字绕梁三日华而不实有案可稽3．下列句子中的成语使用不恰当．．．的一句是（）（2分）A.最近，一向学习成绩平平的王刚有了很大的进步，真叫人不得不刮目相看．．．．。
B. 艺术创作不可以信手拈来，随心所欲．．．．，因为它是一种创造，自有其客观规律。
C. 有志青年在困难面前一定要沉着冷静，决不能畏首畏尾、诚惶诚恐．．．．。
D. 在这次研讨会上，他情绪激动，说了许多颠三倒四的话，真让人觉得不．知所云．．．。
4. 下列句中没有．．语病的一句是（）（2分）A.2010广州亚运会吸引了无数人的关注，观看争夺冠亚军的足球决赛，更是万人空巷。
B.我的伯父是农民企业家，不断致力于新产品、新技术的研制开发，是村里的第二首富。
C. 一些不自觉的学生将垃圾扔在路边，给美丽的校园抹上了不和谐的色彩。
D. 荔枝大小，通常是直径三四厘米，重十多克到二十多克。
5．依次填入下列语段中的关联词语，最恰当的一项是（）（2分）①今天，我们虽然不必提倡不求甚解的态度，但是，盲目地反对不求甚解的态度同样没有________的理由。
天津大学2018年《811电路》考研大纲
天津大学2018年《811电路》考研大纲一、考试的总体要求掌握电路的基本理论和分析计算电路的基本方法，灵活运用所学的电路理论及方法解决复杂的综合性电路问题。
二、考试的内容及比例1．基本概念：电压、电流及其参考方向，电阻、电容、电感、电压源和受控源等元件的特性及其电压电流关系，线性和非线性的概念，电功率和电能量，电路模型，基尔霍夫定律。
2．线性电阻电路的分析：简单电阻电路的计算，星角转换，非理想电源的模型及其等效转换，支路分析法，回路分析法，节点分析法，叠加定理，互易定理，替代定理，戴维南定理和诺顿定理，匹配的概念。
3．正弦交流电路的稳态分析：正弦量的基本概念，正弦量的相量、相量图、电路元件电压电流关系的相量形式、阻抗和导纳，基尔霍夫定律的相量形式，正弦电路的功率，功率因数，正弦电路的分析计算（复数运算、相量图分析），含互感电路的计算（互感电压、同名端、串联、并联、互感消去），谐振电路的特点及其分析计算，三相电路的连接方式，对称三相电路的电压、电流和功率的计算，非正弦周期电流电路的分析计算方法。
4．线性动态电路的时域分析：一阶动态电路的动态过程，换路定则，一阶动态电路的分析计算（零输入响应，零状态响应和全响应，三要素法），阶跃函数和冲激函数，阶跃函数响应和冲激函数响应，二阶电路的时域分析。
5．线性电路的复频域分析：电路元件电压电流关系的复频域形式，复频域阻抗和复频域导纳，基尔霍夫定律的复频域形式，用复频域分析法分析计算动态电路。
6．非线性电路：图解法和小信号分析法。
7．网络方程的矩阵形式：关联矩阵，基本回路矩阵，基本割集矩阵，由关联矩阵建立节点方程、基本回路方程和基本割集方程。
用直观法列写电路的状态方程。
8．二端口网络：二端口网络（包括有载二端口、有源二端口）及其四种参数（Z、Y、H、A）方程和参数的计算，互易条件口，对称条件，二端口网络的等效电路，二端口网络的联接。
9．分布参数电路：无损传输线的正弦稳态解，特性阻抗，行波和驻波，入射波和反射波，匹配的概念，无损传输线的暂态分析，波的发生和反射，柏德生法则。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
天津大学高职接本811专业1112课程模拟题1
一、单选题（每题1分，共20分）
1 OSI七层模型中，以端到端的方式传输数据的是（ ）
A 物理层 B 网络层
C 传输层 D 应用层
2 以Internet为代表的互联网属于计算机网络发展的（ ）
A 第一代 B 第二代
C 第三代 D 第四代
3 之所以存在多个不同的Unix版本，是因为Unix具有（ ）
A 稳定性 B 开放性
C 安全性 D 灵活性
4 在Windows系统中为实现磁盘空间的共享需设定（ ）
A 共享文件 B 共享目录
C 共享路径 D 共享分区
5、在netstat命令结果中，表明计算机正在处于连接工作的状态是（ ）。
A、ESTABLISHED B、LISTENING C、CLOSE_WAIT D、CONNECTED
6、ping命令参数“-t”的含义是（ ）。
A、解析主机名 B、持续ping指定主机 C、显示帮助信息 D、指定发送包的个数
7、NetMeeting和其他普通的网上交流应用相比,主要的不同在于需要( )
A 较快的联网速度 B 较高的系统配置
C 较大的安装空间 D 较强的操作能力
8、IIS是一个（ ）
A 网页制作软件 B 办公应用软件
C 网上交流软件 D 信息服务软件
9、IIS中，web服务器的默认端口是（ ）
A 3128 B 80
C 8080 D 20
10、FTTH指的是（ ）。
A、光纤到大楼 B、光纤到路边 C、光纤到小区 D、光纤到家庭
11、wingate最主要的管理对象是（ ）
A 邮件 B 用户
C 服务 D 数据
12、wingate的用户管理界面是（ ）
A gateserver B gatemanager
Cgatekeeper Dgateconsole
13、超级兔子魔法是一款国产的（ ）
A 系统优化软件 B 注册表扫描软件
C 防火墙软件 D 注册表恢复软件
14、交换机运行在OSI参考模型的（ ）。
A、物理层 B、链路层 C、传输层 D、网络层
15、调制解调器的数据传输速率的衡量单位是（ ）。
A、bit B、b/s C、Byte D、B/s
16、FTTH指的是（ ）。
A、光纤到大楼 B、光纤到路边 C、光纤到小区 D、光纤到家庭
17、安全控制系统中的物理安全不包括（ ）。
A、网络安全 B、环境安全 C、设备安全 D、介质安全
18、下列可以使用正线类型双绞线连接的有（ ）
A、计算机对计算机 B、计算机对集线器
C、集线器对交换机 D、路由器对路由器
19、删除默认共享目录，必须（ ）
A、修改共享名 B、取消共享
C、修改注册表 D、取消添加共享
20、SOHO的组建原则包括健康原则和（ ）
A、适度性原则 B、适应性原则
C、适合性原则 D、适用性原则
二、多选题（每题2分，共20分）
1、DDN专线接入方式的特点有（ ）。
A、IP地址固定 B、线路运行可靠 C、性价比较高
D、具有永久连接 E、上下行速率不对称
2、光纤接入方式有（ABCD）。
A、FTTB B、FTTC C、FTTZ D、FTTH E、FTTA
3、系统安全包含的内容有（ ）。
A、访问控制及内外网的隔离 B、网络安全检测 C、审计与监控
D、网络防病毒 E、网络备份
4、网络系统的安全可能来自（ ）。
A、物理安全 B、网络平台安全 C、操作系统安全
D、应用安全 E、管理安全
5、文档处理软件的主要功能包括（ ）
A 文件压缩 B 文件查看 C 文档编辑
D 文件打包 E 文件排版
6、用友财务软件后台数据库采用的安装程序有（ ）。
A、MSDE B、MS SQL Server 2005 C、MSDE 2000
D、MS SQL Server 2000 E、MS SQL Server 7.0
7、Linux 操作系统的主要优点是（ ）
A 良好的界面 B 多用户多任务
C 良好的结构 D 网络功能强大
E 完全免费
8、下列可以使用反线类型双绞线连接的有（ ）
A 集线器普通口对集线器普通口 B 计算机对集线器
C 集线器级联口对集线器普通口 D 计算机对计算机
E 集线器级联口对集线器级联口
9、在进行权限设置的时候，Sygate支持的端口号只有（ ）
A 21 B 23
C 25 D 80
D 110
E 文件发送
10、 目前流行的可以作为建立CAD网络的网络操作系统有（ ）
A 、Unix B、Netware C BeOS
D 、OS/2 E、Windows NT
三、填空题（每空1分，共10分）
1、文档处理是指文字的排版、编辑、 ，文档处理时办公信息化的重要组成部
分，也是个人计算机的最大用途之一。
2、调制解调器的数据传输速度可以用两种相似但不完全相同的方法来衡量： 和
比特率。
3、交换机有两种交换 交换和 交换。
4、B/S的中文含义是 ，这种模式的客户端专用软件
是 。
5、网络拓扑结构是指网络中 和计算机及其他组件的 。
6、在安装windows NT 操作系统过程中需要在网卡对话框中输入网卡的 地址
, 及类型。
四、名词解释（每题3分，共12分）
1、开通式交换
2、VLAN
3、目录服务器
4、C/S结构
五、简答题（每题4分，共20分）
1、SOHO工作方式的弊端。
2、xDSL概念及主要区别。
3、NT数据分类及如何进行硬盘分区。
4、安全保障方案的设计原则。
5、磁盘整理的意义和方法。
六、应用题（每题9分，共18分）
1、给出具有分支结构的财务网络配置方案并画出该方案的网络拓扑图。
2、画出3Com企业网解决方案的结构图，并说明该方案的主要特点。