2004——2005第一学期期末试卷答案
20042005高三上英语期末考试卷及答案.doc
福建省厦门第一中学2004—2005学年第一学期期末考试高三年英语试卷第一卷（三部分，共115分）第一部分：听力(共两节，满分30分)第一节(共5小题；每小题1.5分，满分7.5分)听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话后，你都有l0秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What do we know about the man?A. He is overweight.B. He won’t give up smoking.C. He is suffering a heart attack.2. What is the man going to buy?A. Food.B. Drinks.C. Flowers.3. What are the two speakers doing?A. Looking for some suitcases.B. Booking tickets for a journey.C. Checking the woman’s baggage.4. Why would the woman rather stay at the hotel?A. It costs less money.B. It saves much labor.C. It feels more comfortable.5. What are the two speakers talking about?A. A painting.B. A country scene.C. A kind of drink. 第二节(共15小题；每小题1.5分，满分22.5分)听下面5段对话。
每段对话后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。
北京联合大学2004-2005学年第一学期《大学英语》期末考试卷及答案(A卷)
北京联合大学《大学基础英语》2004一2005学年第一学期期末考试试卷（A卷）班级姓名学号成绩Part I Listening Comprehension (20%)Section One Conversations (10%)Directions: In this section, you will hear 10 short conversations.At the end of each conversation, a question will be asked about what was said.Both the conversations and the questions will be spoken once.After each question there will be a pause. During the pause,you must read the four choices markedA,B, C and D , and decide which is the BEST answer.1.A.at a meeting B.in the office C.in the city D.out of the town2.A.30 minutes B.20 minutes c. 25 minmutes D.15 minutes3.A.go to work by bicyele B. take a taxi to workc.go to work on foot D.go to work by bus4.A.Physics is very difficult. B.He will probably take physics.c.He will not take physics. D.Physics is his favorite subject.5.A. to see her friends in New York B. to have a tourc. to visit her parents in New York D.to New York with her parents6.A. music B.readimg a book C. a long qucuc D. waiting7.A.a clcrk B. a waiter C. a postman D. a salesman8.A.They shouldn't go to the theatre. B. The subway is slower than a car.C.The subway is faster than a car.D.They can go to the theatre without a car.9.A.He agreed that it was a good meeting. B.He thought it was not a good proposal.C.Her support would have helped him this morning.D.Her support would count for nothing.10.A.If she will do the job. B. What the woman is goimg to do.C.How the woman's health is.D.If the weather is goodSection TwoPassages (10%)Directions: In this section, you will hear 3 passages.At the end of each passage, you will hear some questions.Both the passages and the questions will be spoken only once.After you hear a question, you mnst choose the best answer from the four choices marked A,B, C and D.Questions ll to 13 are based on the passage you have just heard.11.A. its rivers B. the sea C. the gold and silver D. its mountains12.A. to spend a holiday B. to ski on mountainsC. to look for gold and silverD.to travel in Colorado13.A.People living in the cities and towns most like to dig gold in the moumntains.B. Many of them serve in the army and air force and govemment agencies.c. Only a few work in the industries.D.Many of them work in agriculture.Questions 14 to 17are based on the passage you have just heard.14.A.the care and proper selection of dogs for family petsB. different kinds of dogzsc.different kinds of books about dogsD.the responsibility of the parents15.A. from a pet store B.from friendsC. from the books about rarious kinds of dogsD. from the owner of the dogs16.A.Because they are easy to train. B. Because they are aggressive.c.Because thay are big. D.Because they proride companionship as well as protection17.A.when your children are young B. when you live in the city.c. when the space is limited. D.when you live with your parents. Questions 18 to 20 are based on the passage you harve just heard.18.A.. because there are msny developimg nstions.B. becanse people use too msny man-made materials.c.becatuse we have more snd more industries.D.because we are building more comfortable houses.19.A. industry B.health C. the funure of our children D. elean air20.A.No one knows where the society is going-B.People don 't welcome the rapid development of moden society.c.The speaker is womied about the fuure of our modem society.D.Man can do nothing about the problem of pollution.Part l Readling Conprehension (30%)Passage OneSuicide is on the rise in parts of AsiaoA person thinking sbeut taking lhis own life ofen exhibits waning signs, such ss depression,anxiety,hostility oranger.Learming to recogmize these zigns may save someone s life.Most sucides are the conseqtuence of depression.Tesve sigas distinguish resal depressicn fiom oceasional unhsppiness: 1.xviewing thingsonly in the mot negzative terus. The depresed peson its convinced that life will never get beter.2.Avoiding friends and social activities.Safden withdrawal is a signal of distes. 3.Chsnging daily potrenmis dramstieally.when a good sleper suddenly becomes an insomnisc,alighn eater develops a gpreedy appetie, a quiet person funs extrernusely sactive, and there s a chsnce he 's sufEering from depression.Not all depressei pecple are suicidal.Many older adults know that perils (危险) of sadness will pass.They aze more likely to seekprofessionsl heip. Youme people and younger adits often think depresiion will neyer endExperts tel us some suicidal people proride clear-cut sigals of their plan. For instance, some youths send notes or cas.ette tapes toreveal their feelings of depression or helplessness. So leam the signs and do something: life is too important to risk,1.The writer believes thatA. even occasional unhappiness will inevitably lead to suicideB.an emotional person will most likely commit suicideC.all depressed people are suicids1D.suicide can be prevented if ceitain signs are recognized2.According to the passAge, a peTson attempting suicide often shows the following signs EXCEPT thatA. he belieses that life will never get betterB. a previously quiet peason suddenly becomes unasually activeC. be is seeking professional helpD. be suddenly stays away from social activities3.The word "insomniasc” (Para.2,Line 3 ' most probably meansA.a sleepless personB. an unhappy personc. a talkative person D.a senisitive person4. It can be inferred from the passage thatA. suicide is on the decline in other parts of the worldB.before trying to commit suicide, one usually shows some signsc. a person without friends is sure to commit snicideD.older adults never attempt suicide5. Which of tihe following may be the title for the passage?A.An Inevitable Pesult of DepressionB.Suicide Can Be PreventedC.Suicide Is On the RiseD. Danger of Changing Daily Pattems Passge IwoBathing in the soea in England a hundred years ago was not quite the lght-bearted amusement fthat it is today. There was DO runing down ftom the hotel to the beach in a batb robe,加subathing or lying about 咖the sands in bathigdes ater the dip (侵泡).Everything had to be done in an orderly and extemely polite mamer Mixed bathing wass not alowed anywhere. Men and women each had their separate part of the beach and they were nDot supposed to meet im the water.Bathing clothes were also closely cotolled Men usally wore simpl bathing dawers and no more, but women were obliged (被迫)to wear thick, cumbersome woolen guments that corvered them completely fom head to foot., These satisfhed the demands of modesty, but fthey rmust have been extenely umcomfotable for swinming.Even thus decently covered, women were not supposed to show themselves om the beachwhile in bathing costume. They had to wait tbeir tum for a bathing machine. a sot of woodkan cabin om whels which was drawn night down to the water's edge by horses. On its seaward side a sort of hood or camopy (伞盖) stetched outwards and dowwads over he water, completely hiding the batber wtal she was actually in the sea. There was a bathing woman in atendance, part of whose duty was to dip. in otber words, to seize the batbher as soon as she emerged and dip ber frcibly under water two or three times. This was supposed to be for the benefit of her health and no doubt it wasall right in the hands of the gentle. But mosot bathing women mere reverse of the geale. and to be diped by them must have bee a steuouss (艰苦的) fom ofexercise.6. Modem bathersA wear thick, ucomfortable bathing clotbesB. use hose-drawm bathing machinesC. aen't alowed to sumbatheD. have mixed bathing om the beach and im the sea7. Women wore uonortble bating clothes becauseA it porected from coldB. it Was considered bad moanners to show auy fleshC. itmade it easier to smwimnD. it was requird by the rgulations8. Why was the bathing muachines used?"A So that the horses could drimnk at the water's gate.B. So that the hood could be projected towards the seaC, So that the bather could hide from tbe seaD. So that tbe bather could be screened umtil she was in the a9. A bathing -woman's job was toA. ated to the bathing machineB. dip the atendaceC. force the bather to emerge ftom the bathing machineD. force the bather under the water when sbe came out of the machine10. A sitblet title for this pasage would beA. Sea Bating through the AgsB. Bathimg cothes through the AgesC. Sea HorsesD. Hundred Years of Sum BathingPassage ThreeThe loudest outery(强烈反对)about povety (贫困) seemed to come in the wealhiest coumty -by for in the world. According to most calculations, tbough most of tbe 19541970 period the United States had a standard of living well above Europe's and may times above the world average. Y'et protests about erinding porverty, humger and dreadful need poceed (继续下去》more fom the United States than from counties with cn-6fcieth of ther living (An anmual per capita income of eight dllas 1s typcal of mch of Africa and Asia and not a ltle of South America). It would衣em suange t如these psople ( were they only avare of the fxct?)y that Amernican ndicals demand a retreat froman American commitment 0o the fr comers of tbe globe 50 that tbe mobey thus saved can be spent raising the standard of living of udepriliged (下层的) Amercans.What this last print suggests is not s0 mnch that hummn wnts are mever to be stastfied though this is doubtles toue. and the Americn suburbanite (郊区居民) deprived ofhis second car ad his color ” suffers just a acutely韶a African farmer in peed of a second cow and a screen door. Rather, it suggests the esteat of contempoary break of social nonns - the emaeiation of the individual self. People have leamed that their wants are scare and their right ought to be satisfed. They have leamed to consider any obstacle to personal fullment a intolenble insult. They have greatly expanded the circle of self awaen族They加longer accet shap laninations份日) op individual desires im the nane of the group. The amoumnt of potential buman discontet has always been infnite - misery, failure, msfting bitress,hatred, enry beyond eling It bhas usally failed of uterace (讲言表达) , and in the past it vwas accepted pasvely as being beyond belp.11. According to the passage most complaints over a poor living standard were made by those who came from___A. the United StatesB. Asian coumtriesC. the European CommityD. Commonwealth ofNations12 The average income for each Ameican a year during the 60s was most ikely in the bigborod of .___A. 1120 dllarsB. 40 dllarsC.320 dllrsD. 80 dllrs13. n onder to inprove the staodand of living of poor Amenicas, dhe exuemits in the Stotes demand.___A. a fll tax elief on cizeas lving oveveasB. a stop to arms race gainst ations far awyC. a cw im financial stace 0 poor coutiesD. a farorable blaoce of tade nih foreiepe coumties14. The real cause for dhe most fctuste people to potest about porety lies in.A.enhsocod consciousnes of selfB. their ece sthtusC. limiations of bumam maueD. contlict in lass itees15. Fom the last sentracte, in e国bwe safely infered that outry about poverty in effect involves people'sA ahilty to sufer a hadife B. unestanding of their rightsC. polial atiude tmurd the govermeatD. mbole outlook o fferent EfestylesPart III Vocabulary and Structure(20%)1. The city is planning a public to awaken people to the problem of the environment pollution.A. CampaignB. missionC. paintingD. rescue .2. The Party calls on us to___ the West and a lot of uiversity students go there ater graduation.A. ExpandB. explodeC. exploitD. execute3. "Here you are at last" ongrily bis mother.A. ClaimedB. exclaimedC. liedD. leaned4. His first year at Oxford bore__ fruir be pubihied ro bo sad ten papers.A. CriticalB. abundantC. militaryD. relative5. The weather sieututs a series of cold days in te future.A. Reflected B restricted C. nepleced D. prdctedd6. ltis nceary dhat pacpl.and: ipove these olfashioned aircnais.A. MolilyB. elaily C bonity D. satindy .7. Thoghbhe is imerir to sowe stuft in fc,be is the____ m muge of the busimessA. TopicalB. speficialC. ritalD. rtual8. There is ofena___ loss of sigh is old ageA. TrvingB. competive C popressive D. executivee9. The back paint o fbe dor porides a___ for tbe whit wll.A. Conest B contast C. comsct D. conat10. The dortor._the: ptie to be operzed xt cace.A. CousetedB. brkedC. aiciedD. unloled11. Ow itucto_ that we should not te anyone about tis.A. QualtyB. decay . c pecty D. bother12. Hearing a cry for belp. the youmg mom nushed to the bamk and.into the rives to save the cowning bory.A. BestedB. plomgedC. devoledD. rteated13. Yom ither's rcewmsr_ it wam treal recovery and please keep am ep唱him further.A. AmkwrdB. supeficinlC. psblD. imfnite14, Though dtey sid woting aboat it Ihom they wushawew__ int de conse ofitA petated B. reulated C. fusuated D. Desxnbed15. Since be is my boss, he paid mea.five huwdued pounds a mouth.A steady B. prior C. novel D. louely16_.__ by their quality I decided to place a big order for tbe productA Having impressed B. Being impressed C. Impressed D. Impressing17. To our supise the bride's mother didn't.at the wedding ceremoay.A. rm intoB. fl uponC. showD. cut of18.the efot and good will of everyone inroled the Christnas party Wwas a great sucess.A As oif B. Thanks to C. Upto D. Delighted with19. The auhor is of the opinion that early success may prove bamful to a person'salroundd development,A in the long nmn B. for the time being C. all day lomg D. side by side20. The city govenment's frst____ is to buildl a Bew ainport lhis yearA Loan B. sting C. depatpent D. piority21. Jobm said that he owed it.his teacher that he wom the first price in the English spech contest.A from B.of . C. to D.at22. Qalifed dploas(外交的sbouldbe able to___ whatever statoms they find teselres imA show up B. mm into : C. imbue with D. cope with23. If James hadn'tbeen there to_ the awlkward moments, the meeting would have beena disaster.A snoo over . B. limk u C. branch out D. pickp24. I'm somry, but I relly can't so out with you tomighet; I have to.my homework.A .nm outof B. catchup om C. make room for D. smeak of to23. The problem our atindes towurd thnking not in nidiculous govemmen regulations.A lies in B. believes in Cin D. speialies in26. Tim always keeps a certaim anoumt of moaey.m case of an energency.m.B. im useC. on handD. on business27.was a very besutful birthday present that Mary got fom ber auntA. ThisB. That D.It28. Bobby is a small staff in this company, but he tlks to everyone inp the ofie asifhe_ the boss.A. IsB. wereC. hadbeenD. has been29. This place馆as rportedto.an eathquake reistered 7.5 o如tbe Richer scale yesterday.A have bad B. have C. have been had D. be having30. The youmg man adnmited _errors in judgment om more than one occasion.A tomake B. making C. to have made D. made31. A womanwho__ the acident said that both cars were going at high speed wben they crasbedA riolated B. obeyed C. witbessed D. screaned32. People did not see the bomb dropping but they could bear the. several miles away.A extension B. esplosion C. secunity D. spectators .33. The company began by specalizing im nadios but has now decided to nto computers.A branch out B. tum dovn C. take stock D. coumut on34. Ata very ealy age sbeA. PreupedB. sbieldedC. dsigisbedD. moirated35. le wese told tbat tbe foall game had been___ mtil the floming Fidary becouse of the bad wenber.A, signed B. sought C. quified D. posponed36. Jim etetrd de Speech Comtes wileous wch hope, not tinking that he would.. witb the fnst paizeA. EaduφB. est out .C. put downD.ip中.37. Saoking i,,tor mamy ditses swch程lung eamcer, hean amack and high blood peswe,A. Pgessire B teortical C. respousible D. amkwurd38. A the disasston the epeleiee Camre中w谐oy good ides xbout the Dew电uB____A. RlativityB. regulationsC. speisD. taleas39. No mter bow for awy Bb was. bis parents wee. tatbe would come brck o see tbem an the Sping Ftiral.A recmmendeddB selected C. iled D. cominced40. The anpocr's sytes Ta n tfcient a m got om aplame wih a boub without being dcoredA desoasmnionB pese C. eplosion D. secuityPartIV Cloze (10%)Dietioas: Please山im tbe blanks wih the erat words from the testBalscing wons md school was dicu "1 ws sarying中late shudying. and going to wok early ervery moming I was haring a haxrdcocetating i els, and a hud ia u the job beaure I was 10 imod." she say But she ended__2_ wid twe A's in her finst semeser amyway.Picilla decided_ 3_ purue m acbaeloeyr majcr and in the smmme of 1991, she got ber finst oportaity t如Teally best_ 4_ herioe in he aubjet The achelogian Botld chool of Wwashington Stue Uunrersty wws sponoring a smr retrch pojtet糕消it_3_ the Souke Rire im Wetingpon Pisxila erer herel_ 6_ he wonk, and pojer sperisors mre ipesed_ 7_ dbe eadof the smmmer oflhe prefeson efered ber a jo. "He ad "We pw wa coumnet tor a poper in Nerth Dakom We wanto_ 8_you it you're wlling to tike a semetser of fom so"he 9_ was a drepion fou Pici's pursait of ber BA.“But by the Ioo longer doubted fatTrould utiantl fmish shoo 10_ I felt coforabl gabbing this oposis; she saysPart V Translatio (20%)Secian A Put tbe flomig retroces into Chinese (10%)She plomnged into the paints naod before I lhew it she bad mept sevenal ferce stroibes ad slushes of bhue on the absoutely emifed cavas In Confucian plosop the family plays 1 cecbal tole -蹈oicanteso that leads people t1o worlk for the hopor of的e faul nt just ftor temebre.,Ibey felt confortble asing bis adrice on a mide amge of atte icluding the odbeharior of teir piters across山e ocam4. Succes, which eancounges rpreition of eld bwehurioc. 船non smeatly a good a 1eacber as tilue Known 10 mls趣and wide. for hts boo d BrielHiusony ef Time. Stepben Hmking ts a st物clem博tm more ways to aee Setim B Put the floig sealeaces ine Engih a09) i. 他在尝试制定促进恩考艺术的新计划时脑子里闪过了一个绝妙的主意。
2004～2005 学年第一学期《高等数学》期末考试试题A卷与答案
n 22004～2005 学年第一学期《高等数学》期末考试试题 A 卷（216 学时） 专业班级学号 姓名一、填空题：（4×5 分）♣a (1 - cos x ) ♠ x > 0 ♠ x 21、设 f (x ) = ♦4 x = 0 连续，则常数 a = ， b =♠b sin x + ⎰ x e t d t ♠ 0 ♥♠ x x < 0∞∞2、设∑ a xn的收敛半径为 3, 则∑ n a (x -1)n +1的收敛半径 R ＝n n =1nn =13、已知 f (x ) = x (1 - x )(2 - x )…(2005 - x ) ，则 f '(0) ＝∞14、级数∑ nn =1的和 S =二、选择题：（4×4 分）1、函数 f (x ) = (x 2- x - 2) x 3- x 不可导点的个数是A 、 0B 、1C 、2D 、32、设周期函数 f (x ) 在(-∞,+∞) 内可导，其周期为4，且limf (1) - f (1 - x )= -1，x →02x则曲线 y = f (x ) 在点(5, f (5)) 处的切线的斜率为A 、 2B 、－2C 、1D 、－1∞n -11 k3、对于常数k > 0 ，级数∑(-1)tan n + n 2n =1A 、绝对收敛B 、条件收敛C 、发散D 、收敛性与 k 的取值相关4、设函数 f (x ) 有任意阶导数且 f '(x ) = f 2(x ) ,则 f(n )(x ) = (n > 2) .A 、n ! fn +1(x ) B 、nfn +1(x ) C 、f 2n(x ) D 、n ! f 2n(x )x ⎰ ♥三、计算下列各题：（6×6 分）arctan x - x1、求极限： lim3x →0ln(1 + 2x )2、设 y = tan2x + 2sin x，求： d y x =π23、设函数 y = y (x ) 由方程e y+ 6xy + x 2- 1 = 0 确定,求： y '(0)e x + e - xf '(x ) f (x )4、已知 f (x ) =,计算不定积分： 2+ f (x ) f '(x )d x5、设函数 y = y (x ) 由参数方程4 ln x♣♠x = t 3 + 9t ♦♠ y = t 2- 2t 确定，求曲线 y = y (x ) 的下凸区间。
04-05年上学期初一期末试卷英语(附答案)
2004—2005第一学期初一英语期末试卷一、词汇：(10分)A、根据释义，拼写单词。
（5分）1、costing a lot of money x, p, s, i, e, e, e, n, v2、a cut in price i, c, o, s, d, n, u, t3、as much as you want n, e, u, h, g, o4、it is sweet and brown e, o, c, l, h, c, t, o, a5、do sports activities r, i, s, e, e, c, x, e,B、根据句义及首字母提示，在空格处填入一个恰当的词。
（5分）6、We raise money to help the children in p areas.7、There are four seasons in a year. They are spring、summer、autumn and w .8、Would you like to have some n for breakfast?9、She s 100 yuan buying books every year.10、Are you f this afternoon? Let’s go to the park together.二、用所给词的适当形式填空。
（10分）1、The girl with a pair of (glass) is Sandy.2、(walk) is good for health.3、Millie is very polite and (help).4、Different (country) have different languages(语言).5、Look! The man (talk) with a woman.6、What she usually (eat) for lunch?7、There (not be) some milk or eggs in the fridge.8、Simon is good at (play) tennis.9、She likes (watch) TV very much.10、(not look) out of the classroom.三、根据要求改写句子。
郑州大学2004至2005第一学期化工原理期末考试试题及答案
郑州大学2００4至２005第一学期化工原理期末考试试题及答案Ａ卷一、选择题:（每题 2 分,共 2４分）1.利用因次分析法的目的在于Ａ。
A 减少实验工作量B 增加实验结果的可靠性C 建立数学表达式D 避免出现因次错误2．牛顿流体在管内作层流流动,流体层之间的剪应力在 B 。
A 管中心最大B 管壁处最大C 管中处处相等Ｄ管壁处最小3.流体通过离心泵所获得的能量主要表现为 B 。
Ａ动能增加 B 静压能增加 C 位能增加 D 流量增大4.用离心泵把地下贮槽中的液体送入高位槽，完好的离心泵却无法泵送液体，可能导致故障的原因是 C 。
A 贮槽内液面上升B 液体温度下降C 吸入管堵塞D 容器内压强升高5.回转真空过滤机的转速越快，单位时间所获得的滤液量就越___＿_,形成的滤饼层厚度就越__＿_＿，过滤阻力越__＿___。
ＣA 少,薄,小B 少，厚，大C 多，薄,小D 多,薄,大6.离心沉降速度是Ｂ。
A 颗粒运动的绝对速度B 径向速度C 切向速度D 气流速度7、气力输送过程中,垂直管中稀相输送时气速的下限为 B 。
A 颗粒的沉降速度B 噎噻速度C 起始流化速度Ｄ表观气速8．穿过三层平壁的稳定导热过程，已知各层温差为Δt１＝4０℃，Δt2＝35℃,Δt3＝5℃,则第一层的热阻R１与第二、三层热阻R2、R3的关系为Ｂ。
A R1>(R2＋Ｒ3)ＢR1＝(R2＋R3）C Ｒ1＜（R2＋Ｒ3)D 无法比较;9．在无相变的对流传热过程中，热阻主要集中在＿_____，减少热阻的有效措施是___＿__。
CA 层流底层,使流体处于层流状态Ｂ流体湍动区域，使层流底层减薄C 层流底层,提高流体湍动程度D 流体过渡区域，提高流体湍动程度10．在蒸汽冷凝传热中，不凝性气体的存在对对流传热系数α的影响是___A___。
A 不凝性气体的存在会使α值大大降低B 不凝性气体的存在会使α值升高C 不凝性气体的存在与否，对数据无影响D 不一定1１.把一壳程用饱和水蒸气加热管内水的列管式换热器由单管程改为双管程,会引起Ｂ。
北京邮电大学 2004-2005学 年第一学期通信原理试卷附答案
F 1 , K pa F 2 , K F , K pa北京邮电大学 2004-2005学 年第一学期期末试卷附答案一. 填空（每空 1 分，共 16 分）1. 调相信号 s (t ) = A c cos ϒ≤2π f c t + K P m (t )/ƒ，其解析信号（即复信号）的表达式为 ，其复包络的表示式为。
2. 循环平稳过程的定义是。
3. 用基带信号 m (t ) = 2 cos 4000π t 对载波c (t ) = 20 c os 2π f c t 进行调频，若调频的调制指 数是β f = 9 ，则调频信号的时域表达式s (t )=，其信号带宽B = Hz 。
4. 若多级线性网络的第一、二、……及第n 级的噪声系数及功率增益各为 1 、2、…、 n，则级联后的总噪声系数F 为 。
5. 一 MPAM 数字通信系统每隔 0.1ms 以独立等概方式在信道中传送 128 个可能电平之一，该系统的符号传输速率为 波特，相应的信息传输速率为bit/s 。
6. 数字 PAM 信号的平均功率谱密度取决于及。
7. 在 条件下，BPSK 和 QPSK 的平均误比特率相同，但后者的功率谱主瓣带宽是前者的一半。
SC = B l og 2 1+8. 仙农信道容量公式N 0 B 是在 条件下推导得到的。
c 1 29. 利用线性反馈移存器产生 m 序列的充要条件是。
m 序列应用于扩频通信，可利用 m 序列的 特性进行解扩。
10. 最小码距为d min = 7 的线性分组码可以保证纠正 个错，或可保证检测 个错。
二、选择填空（每空 1 分，共 14 分）从下面所列答案中选择出恰当的答案，将对应英文字母填入空格中，每空格只能选一个答案(a) 减小(b )增大(c )不影响 (d )AMI (e )Manchester(f )CMI (g )HDB3 (h )系统在载频附近的群时延(i )时延(j )在信息序列中引入剩余度 (k )对有剩余度的消息进行减小剩余(l )可靠性 (m )有效性 (n )编码信道 (o )恒参 (p )调制信道 (q )随参 (r )等于 8bit (s )等于 4bit(t )小于 4bit (u )大于 4bit1. AM 信号通过带通系统，当带通系统在信号带宽内的幅频特性是常数，相频特性是近似线性时，通过带通系统后信号包络的 等于 。
宁国市2004~2005学年第一学期期末
宁国市2004~2005学年第一学期期末初二数学试题考试时间：100分钟满分：100分一、填空题(每题2分，共16分)1、关于一点成中心对称的两个图形，对应线段_________。
2、已知正方形的一条对角线长为4cm，则它的面积是_________cm2。
3、已知□ABCD中，∠A比∠B小20O，那么∠C的度数是______。
4、恩格尔系数表示日常饮食开支与家庭经济总经济收入的比例，它反映了居民家庭的实际生活水平。
各种类型家庭的的恩格尔系数如表中所示，则用含n的不等式表示小康家庭的恩格尔系数为-的值不小于1。
5、当x___________时，代数式46、若2n=3,3n=6，则6n=_________。
7、若x、y 是正整数，且2x·2y=32，则x+y=__________。
8、当抛掷两枚重量均匀的骰子时，出现“一正一反”这个事件的机会是__________。
二、选择题(每题3分，共24分)1、下列图形是我国几家银行的标志，其中既是中心对称图形，又是轴对称图形的个数为( )A、1B、2C、3D、42、在□ABCD中，EF∥AD，MN∥AB，EF、MN相交于点P，则除□ABCD外，图中还有平行四边形的个数为( )A、4B、8C、8D、103、矩形具有而一般平行四边形不具有的性质是( )A、对角相等B、对边相等C、对角线相等D、对角线互相平分4、如图，天平右盘中每个砝码的重量都是1g ，则图中显示出某药品A 重量的范围是( )A 、大于2gB 、小于3gC 、大于2g 且小于3gD 、大于2g 或小于3g5、下列各式是一元一次不等式的是( )A 、0132>-+y xB 、142<xC 、x x 2213-≤+D 、0)2)(1(>+-x x6、如果232226126)43(xy y x x by y x x ax ++=--成立，则a 、b 的值为( )A 、a=3、b=2B 、a=2、b=-3C 、a=-3、b=2D 、a=-2、b=37、某同学已经抛掷硬币99次，其中50次为正面，49次为反面，则该同学第100次抛掷的结果为( )A 、正面B 、反面C 、正面或反面D 、以上都不对8、某彩票的中奖机会是1%，则下列说法中正确的是( )A 、买1张彩票一定不会中奖B 、买100张一定有1张彩票中奖C 、买100张彩票一定会中奖D 、买1张彩票可能中奖三、计算题(16分)1、)2(31)1(2+-<-x x2、⎩⎨⎧<--<+516932x x x3、))()((22y x y x y x +-+4、20004-19992×20012-1四、解答题(28分)1、梯形ABCD中，AB∥CD，AB>CD，CE∥DA，交AB于点E，且△BCE的周长为7cm，CD为3cm，求梯形ABCD的周长。
2004~2005学年第一学期期末考试流体力学与流体机械.
（2）风机的全压效率为风机的有效功率与风机的轴功率之比，即 ；风机的静压效率为风机的静压和流量的乘积与风机的轴功率之比，即
。。。。。
6．两台同型号的风机并联运行时，其流量和风压与两台单独运行的风机相比有何不同？说明原因。
答：两台同型号的风机并联运行时，其总流量等于并联机组中各台风机的流量之和，其总压头与并联机组中各台风机的压头相同；但并联机组中单台风机的
流量小于单独运行的单台风机
的流量，并联机组中单台风机的压头大于单独运行的单台风机
（2）第二自动模化区是指当流体的流量或Re数增加到某一临界数值时，粘性力的作用可以忽略不计，通道断面的流速分布规律稳定下来，不再随流体的流量增加或Re数的增大而改变。雷诺数Re的这一临界数值称为第二临界值。因为流速分布与Re值无关，说明流动进入了自动模化区，雷诺数Re大于第二临界值的自动模化区称为第二自动模化区。如圆管内紊流 的阻力平方区即为第二自动模化区。
解：已知条件：D2=500mm，b2=100mm，β2=30°，n=1250r/min，Q=8200m3/h，ρ=1.2kg/m3。
（1）
由 和 及β2绘制出口速度图如下：（4分）
（2）
所以 （4分）
5．某系列No.6风机(D2=0.6m)在最佳工况下的流量Q=9360m3/h，全风压p=1060Pa，转速n=1450r/min，现若改用该系列No.4（D2=0.4m）风机，（1）问当n=1250r/min时，最佳工况的性能参数 、 和比转数 是多少？（2*）若该风机的效率为 =70%，问轴功率 是多少？（注：附加3分）
2004-2005学年度上学期高二英语期末测试卷
2004－2005学年度上学期高二英语期末测试卷第一卷(三部分共115分)第一部分：听力（共两节，满分30分）第一节（共5小题，每小题１.5分，满分7.５分）听下面５段对话。
每段对话后有一个小题，从题中所给Ａ、Ｂ、Ｃ三个选项中选出最佳选听完每段对话后，你将有１０秒钟的时间来回答有关小题和阅读下面一小题。
每段对话仅读一遍。
1. What is Jack going to do?A. To visit Jim in hospital.B. To find a taxi.C. To see Jim in the hospital.2. What are they going to do tomorrow?A. A spelling check.B. A reading check.C. A reading book.3. Why didn't they carry the old man to safety?A. Because he can go there himself.B. Because the road is crowded.C. Because he is badly hurt.4. Why should we keep the window open when using a gas?A. Gas can give off heat.B. Gas is poisonous.C. We can breathe the fresh air.5. What does Jane have to do?A. To borrow this book.B. To lend this book.C. To return this book.第二节（共15小题，每小题１.５分，满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所给的Ａ、Ｂ、Ｃ三个选项中选出最佳选项。
听每段对话或独白前，你将有时间阅读各个小题，每小题５秒钟；听完后，各小题将给出５秒钟的作答时间。
2004—2005学年度第一学期期末考试
模拟试题七一、填空（25分）1、质点的运动方程式为r （t ）=（9 + 4t - t 2/2）i +（6t + t 3/3）j （SI 单位）。
当t=2s 时，质点的速度v = ，质点的加速度a = 。
2、一个质点动能的变化量等于 ；一个质点系动能的变化量等于 ；力学系统机械能的变化量等于 。
3、一物体放在水平传送带上，物体与传送带间无相对运动。
当传送带匀速运动时，静摩擦力对物体作功是 ；当传送带减速运动时，静摩擦力对物体作功是 。
（填入“正”、“负”或“零” ）。
4、一质量为m 的物体，原来以速率v 向北运动，它受到外力打击后，变为向南运动，速率为v ，则外力的冲量的大小为 ，方向为 。
5、质量可忽略的轻杆，长为L ，质量都是m 的两个质点分别固定于杆的中央和一端。
此系统对通过另一端点垂直于杆的轴的转动惯量I 1= ；对通过中央点垂直于杆的轴的转动惯量I 2= 。
6、物体系统角动量守恒的条件是 ，动量守恒的条件是 ；机械能守恒的条件是 。
7、系统在某过程中吸热150J ，对外作功900J ，那么在此过程中，系统内能变化是 ；在某绝热过程中，系统内能的变化是900J ，在此过程中，系统作功 。
8、热机循环的效率是21% ，那么，经一循环吸收1000J 热量，它所作的净功是 ，放出的热量是 。
9、如图所示，负点电荷Q 的电场中有两a 、b 点，则 点电场强度较大， 点的电势较高。
将正电荷q 从b 点移至a 点，电势能将 （填“减小”、“增大”或“不变” ）。
二、选择（每题3分，共30分）1、质点沿半径为R 的圆周作匀速率的运动，经时间T 转动一周。
那么，在2Ta b - Q9题图时间内，其平均速度的大小和平均速率分别为[ ]A 、2πR/T ，2πR/T ；B 、0，2πR/T ；C 、0，0 ；D 、2πR/T ，02、一个做直线运动的物体，其速度v x 与时间t 的关系曲线如图所示，设t 1到t 2时间内合力做功为A 1,t 2到t 3时间内合力的功是A 2，t 3到t 4时间内合力的功是A 3,则下述正确者为[ ]A 、 A 1>0 ,A 2<0 ,A 3<0B 、 A 1>0 ,A 2<0 ,A 3>0C 、 A 1=0 ,A 2<0 ,A 3>0D 、 A 1=0 ,A 2<0 ,A 3<0 3、一子弹以水平速度射入一静止于光滑水平面上的木块后，随木块一起运动，对于这一过程的分析，正确的是[ ]A 、 子弹、木块组成的系统机械能守恒；B 、 子弹、木块组成的系统水平方向的动量守恒；C 、 子弹所受的冲量等于木块所受的冲量；D 、 子弹动能的减少等于木块动能的增加。
2004—2005学年度第一学期期末考试初一数学
2004—2005学年度第一学期期末考试初一数学试卷一、选择题(本大题共10小题，每小题2分，共20分。
每小题只有一个选项是正确的，把正确选项前的字母填在下表中)1．31的相反数是 (A)3 (B)―3 (C)31 (D)―312．方程21x=3的解是 (A)x=6 (B)x=―6 (C)x=23 (D)x=32 3．在―(―6)，―(―6)2，|―6|，―62这四个数中，负数的个数为(A)1个 (B)2个 (C)3个 (D)4个 4．当a =―5，b=―3时，代数式2b 2―5a 的值等于(A)18 (B)―18 (C)43 (D)―43 5．如果―54x 2a ―1y 6与―2xy 6是同类项，则代数式(a —2)2004·(2a —1)2005的值是 (A)0 (B)1 (C)―1 (D)1或―1 6．若|x|=3，|y|=2，xy ＜0，则x+y 的值等于(A)5或―5 (B)1或―1 (C)5或1 (D)―5或1 7．如图，AB ∥CD ，直线EF 分别交AB 、CD 于点E 、F ， BG 平分∠BEF ，∠l=50°，则∠2为(A)50° (B)60° (C)65° (D)70° 8．下面事倩中必然事情是(A)打开电视机，它正好播广告 (B)异号两数相加，和为零 (C)黑暗中我从一大串钥匙中选出一把，用它打开了门(D)抛掷一枚普通的正方体段子，掷得的数不是奇数就是偶数 9．下列左边的正视图和俯视图对应右边物体中的10．下列图形中，不可能围成正方体的是二、填空题(本大题共8小题，每小题2分，共16分)11．某天早晨的气温是―7℃，中午上升了11℃，则中午的气温是_________℃。
12．把多项式2x 2+3x 3―x+5x 4―1按字母x 降幂排列是_______________________。
13．已知∠α的补角为120°，则∠α的余角为__________。
2004—2005年度第一学期江苏省南通第一中学期末考试
2004—2005年度第一学期江苏省南通第一中学期末考试2004—2005年度第一学期江苏省南通第一中学期末考试英语试题听力部分Ⅰ根据录音选择正确的图片：（5%）( )1.( )2.( )3.( )4.( )5.Ⅱ根据录音选择正确的应答句：（5%）( )1. A. I’m very well. B. I’m a student. C. I’m Jill.( )2. A. Yes, I’m late. B. Excuse me. C. I’m sorry.( )3. A. Yes, he’s Tom. B. He is a policeman.C. He is my cousin Tom.( )4. A. Yes, she doesn’t. B. No, she isn’t.C. No, there isn’t.( )5. A. I do my homework and watch TV.B. I have many good friends.C. I don’t k now.Ⅲ听短文填写单词：（5%）I have a _________ family. There are three _________ in it. My father, my mother and I. I like _________ books and playing computer games. I like eat ing very much. I don’t like sports. So I am very fat(胖的). My mother often gets up _________ in the morning. My father likes eating, too. They ________ _ me very much.笔试部分Ⅰ词汇(15%)A 根据句意、汉语或英文提示写出单词：（5%）21.Jack is a very __________(聪明的) boy.2.My grandfather has an old __________(收音机). He often listens to it.3.Do your __________ watch TV every evening? (father and mother)4.How many __________ are there in a year? Twelve.5.We don’t have any lessons on __________ or Sunday.B 用所给单词的适当形式填空：（5%）1. Is this your bike? No, ________ is over there. ( I )2.There is a _________ desk in the front of the classroom. (teacher)3. English is __________. We must work hard at it. (help)4. Are Jack and Tom _________ of your school football team? (play)5. We can swim in the __________ pool. (swim)look cool come to the party fly kitesbe late for school wash the dishes1.The boy _________________ today.2.Sam, please ___________________tomorrow evening.3._______ Jim _______________in his new coat?4. I often __________________ at home.5.My brother always __________________ with his friends.Ⅱ单项选择：（15%）( )1．_________/ / Maths teacher is Mr. Wang.A. ThereB. TheirC. TheyD. Theirs( )2. ________ there any chairs in the room?A. IsB. AreC. HaveD. Has( )3.What time is it now? ______________.A. At seven.B. At seven fifteen.C. It’s seven o’clock.D. It’s seven fifteen o’clock( )4. Mr and Mrs Black usually go for _______ walk after _______dinner .A. a, theB. the, /C. /, aD. a, /( )5. Where is the tennis racket, Mum?Oh, here_________.34Where _______ they ______ _______ ?2.Simon takes a bus home every day. ( 同义句)Simon________ ________ ________ ________every day.3. There are some pears in the bag. ( 改为否定句)There _______ ________ pears in the bag.4. Kitty does her homework after school. (改为一般疑问句)_______ Kitty _______ her homework after school?5. My cousin is 12 years old. ( 划线部分提问)________ ________ is your cousin?6. She often waters the flowers in the garden. (划线部分提问)________ ________ she often ________in the garden?Ⅴ选择适当的句子完成对话：（5%）—__________1___________ ,Mary?—I’m fine, thank you.—Where do you live now?—___________2____________.—___________3___________?—The house is too small.—____________4_____________.—About an hour.—Can you go shopping with me this weekend?—____________5_____________.A. I live in a small flat.B. How are you?C. How long do you go to work every day?D. Of course.E. Why not live with your famil y?Ⅵ完形填空：（10%）My father __ 1____ a good friend in the factory(工厂). He is sixty. H e is an old man. All of the children(孩子们) like him. We call __2___ Uncle Sam. He __3____ from England. He ___4___ in Sichuan. He can’t __5_____5Chinese. We teach(教) him ___6___. He ___7_ us English. He ___8____ work on Sundays. He __9___ making things. And he likes watching TV __10___ h is children at night.( )1. A. have B. haves C. has D. is( )2. A. he B. they C. him D. his( )3. A. come B. comes C. goes D. to come( )4. A. live B. living C. lives D. to live( )5. A. speak B. tell C. say D. talk( )6. A. English B. Chinese C. England D. American( )7. A. teach B. teachs C.teaches D.teaching( )8. A. do B. don’t C. does D. doesn’t( )9. A .likes B. like C. to like D. liking( )10. A. and B. with C. like D. butⅦ阅读理解：（10%）（A）A cat asks an ant(蚂蚁), “Where is the apple tree?” The ant says, “I k now, but give(给) me two apples. OK?” “OK!” says the ant. They come to a n apple tree. Many big apples are on it. Quickly(很快地), the cat is in it. “G ive me, please,” says the ant.“Oh, no. They’re my apples, not your apples.”“Only one, please! Only one!”“OK! Here you are.” One small apple falls down(落下).The ant thanks him and goes away(走开).Quickly, one, two…many ants come behind the ant.根据短文内容，判断句子正（T）误（F）:( )1. The apples are in the tree, and the cat is on the tree.( )2. Many big apples are on the tree, but the ants have only one apple. ( )3. The cat is selfish(自私的).( )4. The ant is a fool.(傻瓜).( )5. The ants are united(团结的).（B）6Mr. Smith is an Englishman. He teaches English well. His English classes are very interesting. He likes us and we like him, too.Mr. Smith has two children---Tom and Lucy. Tom is seven and his sister Lu cy is four. Tom goes to school but Lucy doesn’t. Mr. Smith likes to wear a T-shirt and jeans. Football is his favourite sport. After school we often have a basketball match. Sometimes Mr. Smith watches and joined us. He plays ba sketball just（仅仅）for fun.根据短文内容，选择正确答案：( )1. Mr. Smith is __________.A. a Chinese teacherB. an English teacherC. a Japanese(日本的) teacherD. an English dancer( )2. How many sons(儿子) does Mr. Smith have?A. Only oneB. TwoC. ThreeD. Not any(没有)( )3. Lucy doesn’t go to school because(因为) ________.A. she looks beautifulB. she is sevenC. she is only fourD. she doesn’t like school ( )4. _______ is Mr. Smith’s favourite sport.A. BasketballB. FootballC. RunningD. Tenn is( )5. The story(故事) is about __________.A. Mr. Smith’s sonB. Mr. SmithC. Tom and MaryD. a baske tball matchⅧ改错：（5%）( ) _________ 1. They walk to home every afternoon.AB C D( )_________ 2.Would you like play with us?AB CD( )_________ 3. Does your mother slim?7AB C D( )_________ 4. There are eight hundreds studentsA B C Din our school.( )_________ 5. He often writes e-mails for his friends.A B C D作文：（10%）姓名：李平年龄：14岁出生地：南通生日：4月8日班级：7年级2班外貌：1.5米高，短发爱好：喜欢听音乐，打篮球志向：长大后做一名医生初一年级期末考试试卷答案听力部分Ⅰ1.We often have dinner in a restaurant at the weekend.2.Can I borrow your ruler?3.Simon is good at playing tennis.4.My father likes going running in the morning.5.I like looking for things on the Internet after school. ( B C C A D ) Ⅱ1.What’s your name? 2.You’re late, Lily.3.Who’s that boy?4.Is Miss Li your Maths teacher?5.What do you usually do on Sunday? ( C C C B A )ⅢI have a happy family. There are three people in it. My father, my mo ther and I. I like reading books and playing computer games. I like eating v ery much. I don’t like sports. So I am very fat(胖的). My mother often gets up early in the morning. My father likes eating, too. They love me very muc h.8笔试部分Ⅰ.A. clever radio parents months SaturdayB. mine teacher’s helpful players swimmingC. is late for school come to the partyDoes look cool wash the dishesflies kitesⅢBBCDA CBBBC BDCDBⅣthe World Cup help each othergo shopping by the way玩得愉快床底下的鞋谈论一部精彩的电影Ⅴ 1. do,come from 2. goes home by bus3. aren’t any4. Does, do5. How old6. What does , doⅥ B A E C DⅦ. CCBCA BCDABⅧFFTTT BACBBⅨ 1. C home 2. B to play3. A Is4. C hundred5. C toⅩ略9。
20042005学年度上学期期末考试
2004－2005学年度上学期 期末考试初二年级 语文试卷考试时间：120分钟 试卷满分：100分 命题人：ylljhy一、知识的积累与运用（共计27分）1请将下面词语中书写错误的字找出来，并在下面的田字格中写出正确、规范的字。
（2分）大有稗益 老态龙钟 危言耸听 一番风顺终南捷径 容光换发 针贬时弊 脍炙人口错字为改为2选出下列词语中加点字注音完全正确的一项：（ ）（2分）A 倔．强（juè） 谙．熟（ān ） 咄．咄逼人（duó） 淡然处．之（ch ŭ） B 深邃．（shuì） 虬．枝（qiú） 所向披靡．（mí） 前仆．后继（p ū） C 卑鄙．（b ĭ） 颠簸．（b ǒ） 佁．然不动（y ĭ ） 鬼使神差．（ch āi ） D 绰．号（chu ō） 稽．首（qí） 拈．轻怕重（ni ān ） 弄巧成拙．（zhuó） 3下列词语中加点字解释有错误的一项：（ ）（2分）A 相看两不厌．（讨厌） 不假．思索（通过） 水尤清冽．（清澈） B 适．得其反（正好） 七月流．火（指向下移动） 汗流浃．背（湿透） C 矢．志不移（发誓） 大相径．庭（门外的小路） 改旗易．帜（变换） D 不言而喻．（明白） 精益．求精（更） 见异思迁．（变动） 4下列句子中没有语病的一项是：（ ）（2分）A 发展生产力是当前首当其冲的大事，是一切工作的重中之重。
B 近30年来新成立的科技公司的总资产，已经接近一万亿美元，而这个增长速度还在与日俱增。
C 中学生写作文要有真情实感，注意写身边的真人真事，切忌不要胡编乱造。
D 我记得我们演过许多莎士比亚的戏。
5下列句子中画线处标点符号使用正确的一项：（ ）（2分）A 白求恩同志是个医生，他以医疗为职业，对技术精益求精；在整个八路军医务系统中，他的医术是很高明的。
B 人生什么事最苦呢？贫吗？不是。
失意吗？不是。
2004-2005学年度第一学期八年级物理期末考试试题-带答案
2004-2005学年度第一学期八年级物理期末考试试题一、选择题（每小题3分，共30分）1.如图所示，池鹭号称是捕鱼高手，池鹭在水面疾驰掠过，冲向自己的目标，瞬间叼起水中的“猎物”——鱼，下列有关说法中正确的是（）A．池鹭在水中的“倒影”是光的反射形成的B．池鹭在水中的“倒影”是光的直线传播形成的C．池鹭飞的越高，在水中的“倒影”越小D．水面波光粼粼是光在水面发生了漫反射2.下列关于运动和静止的说法正确的是（）①漂流而下的小船，以河岸为参照物，小船是运动的②飞机在空中加油，以地面为参照物，受油机静止③人站立在上升的电梯中，以地面为参照物，人是静止的④月亮在云中穿行，以月亮为参照物，云是运动的。
A.①②B.②③C.①④D.③④3.下列有关声现象的说法中，不正确的是（）A.声是由物体的振动产生的B.演奏二胡用不同手指按弦是为了改变音调C.声音在真空中传播的速度是3×108m/sD.人们利用超声检测锅炉是否有裂纹，说明声可以传递信息4.如图是某物体做直线运动时的路程随时间变化的图象，下列说法错误的是（）A．物体在6s内运动的路程为15mB．物体在6s内的平均速度为2.5m/sC．以地面为参照物，物体在2～4s内静止D．物体在前2s内和最后2s内的速度大小是相等的5.因为有了光，世界才会如此绚丽多彩。
下列关于光现象说法正确的是（）A.在医院的手术室、病房里常用红外线来杀菌B.灯光下的绿叶蔬菜看上去绿油油的，是因为蔬菜吸收了绿光C.我们在路上看到交警身上穿的反光马甲比较亮，说明反光马甲属于光源D.坐在教室里不同位置的同学都能看清黑板上的粉笔字，这属于光的漫反射现象6.我国成功发射了世界首颗量子科学实验卫星“墨子号”。
第一次用科学方法解释了光沿直线传播，促进量子通信发展，下列各光现象与此原理不同是（）A. 月食B. 小孔成像C. 阳光透过树林时留下树的影子D. 水中倒影7.有关宇宙和粒子，下列说法正确的是（）A.质子、原子、电子是按照尺度由大到小的顺序排列的B.地球绕太阳运动，说明太阳是宇宙的中心C.原子由原子核和电子组成D.质子是微观世界中最小的粒子8.下列说法中正确的是（）A.一支粉笔分成了体积相等的两段后，粉笔的密度变为原来的一半B.密度不同的两个物体，其体积一定不同C.金的密度为19.3×103kg/m3，表示1m3的金的质量为19.3×103kgD.铁块的密度比木块的密度大，表示铁的质量大于木块的质量9.小浩分别测出A、B两种不同物质的质量和体积，并绘制m-V图像，如图，则（）A. 物质A、B的密度之比是6：1B. 物质A的密度随体积增大而增大C. 水的m-V图像应该位于区域ⅠD. 当A和B两物质的体积相同时，B物质的质量较大10.下列关于测量工具的说法中，错误的是（）A.刻度尺在读数时，视线要与尺面垂直B.选用更精密的测量仪器，就可以减小误差C.量筒读数时，视线要与凹液面最低处相平D.测量物体质量时，右盘下沉，要向左调节平衡螺母二、填空题（每空1分，共14分）11.石墨烯被称为“黑金”、“新材料之王”，科学家甚至预言石墨烯将“彻底改变21世纪”。
天津大学《化工原理》(上册) 期末考试试卷及参考答案
《化工原理》（上册）期末考试试题（2004～2005学年第1学期）题 号 一 二 三 四 五 合 计 分 值 25 12 23 18 22 100 实得分一、选择与填空1. 在层流流动中，若流体的总流率不变，则规格相同的两根管子串联时的压降为并联时的倍。
A. 2；B. 6；C. 4；D. 1。
2. 流体在光滑管内作湍流流动时，摩擦系数与 和有关；若其作完全湍流（阻力平方区），则仅与有关。
3. 流体在长为3m 、高为2m 的矩形管道内流动，则该矩形管道的当量直径为。
A. 1.2m ；B. 0.6m ；C. 2.4m ；D. 4.8m 。
4. 用离心泵在两个敞口容器间输送液体。
若维持两容器的液面高度不变，则当输送管道上的阀门关小后，管路总阻力将。
A. 增加；B. 不变；C. 减小；D. 不确定。
5. 离心泵的效率η和流量Q 的关系为 。
A. Q 增大，η增大；B. Q 增大，η先增大后减小；C. Q 增大，η减小；D. Q 增大，η先减小后增大。
6. 若沉降室高度降低，则沉降时间 ；生产能力 。
A. 不变；B. 增加；C. 下降；D. 不确定。
7. 用板框过滤机过滤某种悬浮液。
测得恒压过滤方程为（θ的单位为s ），则K 为m 2/s ，q e 为m 3/ m 2，为s 。
8. 在重力沉降操作中，影响沉降速度的因素主要有 、和。
9. 对双层平壁的稳态导热过程，壁厚相同，各层的导热系数分别为和，其对应的温差分别为和，若> ，则和的关系为____。
A. <；B. =；C. >。
D. 不确定。
10. 蒸发过程中引起温度差损失的原因有，，和。
λλθ5210402.0-⨯=+q q e θ1λ2λ1t ∆2t ∆1t ∆2t ∆1λ2λ1λ2λ1λ2λ1λ2λ二、解释下列概念或术语 1. 质量流速 2. 汽蚀余量 3. 过滤速率 4. 蒸发强度三、用轴功率为0.55kW 的离心泵，将敞口储槽中的液体输送至表压为90 kPa 的密闭高位槽中。
2004～2005学年第一学期《高等数学》期末考试试题B卷(.
2004~2005学年第一学期《高等数学》期末考试试题B 卷答案一、填空题(4×4分1、32−x ; 2、31−; 3、4; 4、(xf x c +; 5、2222sin 1cos x x x + 二、单项选择题(5×3分1、C;2、D;3、A;4、C;5、B三、试解下列各题解:1、0000→→→→x 2、66sin 31ln(2lim sin 20lim 31(lim 00e e e x x x x x x x x x ===+→→+→ 3、xdx dx x x x x x erc dy arctan 11tan 22=⎦⎤⎢⎣⎡+−++= 4、两边对x 求导(10x y dy dy e y x dx dx++−−= x y x y dy e y dx x e ++−=−5、22sin dx t t dt =−222222(cos 2sin cos 2sin dy t t t t dt t tdt =−−=−2222sin 2sin dy t t t dx t t == dy d dt dx = 22212sin d y dx t t =− 6、2c ==+ 7、22204 4044sin sin sin 111x x xx x x dx dx dx e e e ππππ−−−−−−=++++∫∫∫ 220404sin sin 11x t x t dxx t dt e e ππ−−=−++∫∫ 22444004sin 1sin (1cos 221xx dx xdx x dx e ππππ−−==−+∫∫∫ 40111(sin 2(2228x x ππ=−=− 8、2201arctan(1arctan (1td t ′∫+− ∫+−−−=2122121(arctan 1(21dt tt t t 125/2arctan −+=u四、解:例如广义积分∫10d 1x x 收敛时,但广义积分∫10d 1x x 发散。
中央广播电视大学2004-学年度第一学期开放本科期末考试法学含答案与解析)-交互61
中央广播电视大学2004--2005学年度第一学期“开放本科”期末考试法学、法学维语专业《中国法制史》试题(总分100, 做题时间120分钟)一、单项选择题(每小题2分，共20分)1.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:D2.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:B3.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:B4.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:A5.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:B6.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:A7.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:B8.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:D9.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:D10.SSS_SIMPLE_SINA B C D该题您未回答:х该问题分值: 2答案:C二、多项选择题(每小题2分，共20分)1.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:B,C,D2.SSS_SIMPLE_MULA B C D E该题您未回答:х该问题分值: 2答案:B,C,D3.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B,C,D,E4.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B,C,D5.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B,C,D,E6.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,C7.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B8.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B,C9.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,D10.SSS_SIMPLE_MULA B C D E 该题您未回答:х该问题分值: 2答案:A,B,D三、填空题(每空2分，共10分)1.SSS_FILL该题您未回答:х该问题分值: 2答案:汤刑2.SSS_FILL该题您未回答:х该问题分值: 2答案:商鞅3.SSS_FILL该题您未回答:х该问题分值: 2答案:御史台4.SSS_FILL该题您未回答:х该问题分值: 2答案:宋朝5.SSS_FILL该题您未回答:х该问题分值: 2答案:官制改革四、名词解释(每小题5分，共20分)1.质剂SSS_TEXT_QUSTI该题您未回答:х该问题分值: 5答案:2.官当SSS_TEXT_QUSTI该题您未回答:х该问题分值: 5答案:3.《唐律疏议》SSS_TEXT_QUSTI该题您未回答:х该问题分值: 5答案:4.九卿会审SSS_TEXT_QUSTI该题您未回答:х该问题分值: 5答案:五、问答题(每小题10分，共30分)1.秦朝的作刑包括哪些?SSS_TEXT_QUSTI该题您未回答:х该问题分值: 10答案:2.简述领事裁判权。
2004—2005学年《地球概论》-A卷参考答案
地理系2004—2005学年第（一）学期期末考试《地球概论》试卷(A)（参考答案）一、名词解释（每个3分，共15分）（略）1、岁差：2、晨昏蒙影：3、恒星时；4、食季：5、光行差：二、填空（每空1分，共45分）1、由于地球自转，傅科摆的摆动平面在北半球沿顺时针偏转，在南半球沿逆时针方向偏转。
2、地球自转的周期有三种：太阳日、太阴日和恒星日，其中最长的一种周期是太阴日，平均为24小时50分。
3、在石家庄（Ф=38°02’N），恒显星区的赤纬从51°58’度至90°度；恒隐星区的赤纬从-51°58’至-90°度。
4、地球绕日公转的面速度是不变的，而角速度和线速度却随公转轨道而变化。
5、地球公转的真周期是恒星年年，它等于365.2564 （平）日。
由于春分点每年沿黄道向西移动50.29”，故地球上季节变化为1回归年年，它等于365.2422 （平）日。
6、某地子夜时，测得太阳高度是8°20’，而太阳的赤纬是22°9’，则该地的纬度是76°11’。
7、五带的划分，以有无直射和有无极昼（夜）现象两种天文现象为标志，以南北回归线和南北极圈为纬度界线。
8、某地子夜时，测得太阳高度是8°20’，而太阳的赤纬是22°9’，则该地的纬度是76°11’。
9、由于太阳的周年视运动，太阳赤经变化于0度至360 度之间，太阳赤纬变化于23°26’度至-23°26’度之间，而太阳的黄纬则是不变的。
10、五带的划分，有无直射和有无极昼（夜）现象两种天文现象为标志，以南北回归线和南北极圈为纬度界线。
11、我国某地观测到一颗永不下落的恒星，下中天时高度为20°，上中天时高度为50°，则该星的赤纬和观测地的纬度分别为35°和75°。
12、日食总是从日轮的西缘开始，东缘结束；月食总是从月轮的东缘开始，西缘结束。
诸暨市20042005第一学期期末考试试卷(答案)
诸暨市2004—2005第一学期期末考试试卷八年级《历史与社会》亲爱的同学：《历史与社会》用她一幅幅灿烂的古代社会画卷伴随我们渡过了愉快的一个学期。
相信你会有很多收获，现在让我们一起来分享你学习的快乐和成功的喜悦吧！一、精挑细选（每题只能选取一个答案40分）B 1、早期人类生活环境险恶。
常有凶禽猛兽出没，我国居民中，最早懂得用火保护自己安全的是：A、元谋人B、北京人C、河姆渡原始居民D、半坡原始居民C 2、假如你生活在距今7000年的浙江余姚河姆渡村，将不会遇情况是：A、种植水稻B、骨耜耕地C、住半地穴式房子D、用陶器装粮食B 3、歌曲《龙的传人》有一句歌词——“黑眼睛黑头发黄皮肤，永永远远是龙的传人。
”作为龙的传人的中华民族尊奉为我们的人文初祖是：A、盘古和大禹B、黄帝和炎帝C、尧和舜D、禹和启D 4、“特洛伊木马”现在成为打进敌人“心脏”的战术，即“挖心战”的代名词，木马计的故事来源于：A、《吉尔伽美什》B、《西游记》C、《春秋》D、《荷马史诗》B ５、你看过获得奥斯卡最佳外国语片奖有印度电影《阿育王》吗？阿育王在印度家喻户晓，他在位时，孔雀王朝成为印度历史上第一个统一的大帝国。
按古代印度“种姓制度”的划分，阿育王应该属于A、婆罗门B、刹帝利C、吠舍D、首陀罗A６、我们经常使用的俗语、成语，如“实际”、“五体投地”、“回头是岸”、“方便”等来源于：A、佛教B、道教C、基督教D、伊斯兰教B７、“在这里，基督教统治着一切。
庄园几乎成为自给自足的小世界……”这文字描绘的是A、中世纪的欧洲B、中国的东汉时期C、古代希腊D、８世纪的阿拉伯帝国D８、下列关于建筑特点与宗教信仰之间关系说法正确的有：①各国建筑风格都受到各自宗教文化的影响②建筑与宗教是两个不同的概念他们之间不可能也不应该有联系③寺庙、天主教堂、清真寺分别代表了佛教、基督教和伊斯兰教；④相同的宗教信仰在所有的地区的建筑风格完全相同Ａ、①④Ｂ、②④Ｃ、②③Ｄ、①③C９、孔子很了解自己的学生，他知道高柴愚钝，曾参性子慢，了张好偏激，子路爱冲动，就有针对性地对他们进行教育，发挥他们的长处，帮助他们克服不足。
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一、给定关系R(A,B) 和S(B,C) ，将下面的关系代数表达式转换为相应的SQL语句：
π (attribute-list) [ (condition) [ R ⋈ S ] ]
二、Megatron 747 磁盘具有以下特性：
1）有8个盘面和8192个柱面
2）盘面直径为3.5英寸，内圈直径为1.5英寸
3）每磁道平均有256个扇区，每个扇区512字节
4）每个磁道10％被用于间隙
5）磁盘转速为7200 RPM
6）磁头启动到停止需要1ms，每移动500个柱面另加1ms
回答下列有关Megatron 747的问题（要求写出式子并且计算出结果，精确到小数点后两位）：
1）磁盘容量是多少GB？
2）如果一个块是8KB，那么一个块的传输时间是多少ms？
3）平均寻道时间是多少ms？
4）平均旋转等待时间是多少ms？
三、下面是一个数据库系统开始运行后的undo/redo日志记录，该数据库系统支持simple checkpoint
设日志修改记录的格式为<Tid, Variable, New value, Old value>，（1）、（2）、（3）为三种故障情形下磁盘日志内容，请分别给出这三种情况下数据库系统的恢复过程以及数据元素A, B, C, D, E, F和G在执行了恢复过程后的值。
四、查询处理器在回答涉及R(A, B)和S(B, C)的查询“Select * From R, S Where R.B=S.B and R.B=10”时，生成了下面的逻辑查询计划：()
()S R B S B R 10
.10.==σ
σ，已知有关参数为： ● R 和S 的元组都是定长的，在磁盘块中连续存放
● T(R) = 60000，V(R, B) = 12，B(R) = 6000，T(S) =30000， V(S, B) = 5，B(S) = 1000 我们假设： 1）此查询计划中的连接实现时采用散列连接算法（非“混合散列连接”）
2）中间结果不写回磁盘 3）散列的桶存储在磁盘上 4）最终结果存放在内存中 5）有足够的内存可以执行散列连接算法 请估计此查询计划的I/O 代价。
五、我们想将关系R 按某个字段排序。
已知R 的下列信息：
• R 包含 100000 个元组，即 T(R) = 100000. • 一个磁盘块大小为 4000 bytes.
• R 的元组大小为 400 bytes ，即S(R) ＝ 400.
• 关系R 在磁盘上是连续（contiguous ）存放的，并且每个磁盘块中仅存放R 的记录 • 排序字段的大小为 32 bytes. • 记录指针的大小为 8 bytes. 回答下面的问题： （1） 如果使用两阶段归并排序，要求的最小内存是多少 （用块数表示）？ （2） 使用两阶段归并排序需要多少次磁盘I/O ？（包括最后将排序文件写回磁盘的代价） （3） 考虑下面改进的归并排序算法。
原来的两阶段归并排序的第一阶段是将排序后的整个元组写到
chunk 中，现在我们仅将排序后的 <sorting key, recordPointer> 写出。
第一阶段，我们在内存中将记录按 <sortingkey, recordPointer> 排序，当<sortingkey, recordPointer>记录填满内存时将其写到chunk 中。
第二阶段，读入各个chunk 中的 <sortingkey, recordPointer>并在内存中归并。
通过记录指针(recordPointer)我们可以读取记录的其它部分(从R 的存储块中)，并将排好序的记录写回磁盘。
这一改进的排序算法要求的最小内存是多少（用块数表示）? 排序需要多少次磁盘I/O? 在其他参数不变的情况下，当R 的元组多大时这个改进算法的I/O 代价要优于原来的归并排序算法？
（4）
⋈。