版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
(5)大学英语四级考试模拟试题LtD大学英语四级考试模拟试题ModelTestFivePartⅠListeningComprehensionDirections:ThissectionisdesignedtotestyourabilitytounderstandspokenEnglish.Youwillhearaselectionofrecordedmaterialsandyoumustanswerthequestionsthataccompanythem.Choosethecorrectanswer---A,B,CorD,andthen,markyouranswerbywritingthecorrespondingletterontheAnswerSheet.SectionA(C)11.A)Hewillonlybeavailableintheafternoon.B)It’snothisofficehour.C)Hedoesn’thavetime.D)Heistootiredafterclass.(A)12.A)Thewomaninsistsongoingout.B)Thewomandoesn’tlikewatchingTV.C)Themanpromisedheragiftonherbirthday.D)Themanistootiredtogoout.(B)13.A)TherearetoomanycoursesofferedtoC)Thesupervisorwon’tobservetheregulations.D)Thestudentsstayattheterminaltoolong.(C)22.A)Invitethelabsupervisortoattendclass.B)Repairthelaboratoryinanewway.C)Prepareanoticetogiveoutinclass.D)Addmoreterminalstothelaboratory.(A)23.A)Art.B)French.C)Chemistry.D)German.(C)24.A)Doingsomephotographyandtravel.B)Goingtoconcertsquitefrequently.C)Playingtraditionaljazzandfolkmusic.D)Goingtothetheatrenowandthen.(A)25.A)Experienceathoroughtraining.B)Getoffthetraineeschedule.C)Knowhowtoworkwithpeople.D)Knowaboutallaspectsofthework.SectionBPassage1(D)26.A)90.B)108.C)180.D)668.(A)27.A)England’sFootballeroftheyear.B)AsoccercoachinWestGermany.C)Wildcelebrationsofgoals.D)AmemberoftheOrderoftheBritishEmpire.(D)28.A)EditingSundaySport.B)WorkingforCapitalRadio.C)Managingprofessionalsoccerteams.D)Developingasportsmarketingcompany.Passage2(C)29.A)BecausehewasafamousEnglishwriter.B)Becauseheenjoyedwalkingalongthestreet.C)Becausehehadagoodmemory.D)Becausehewasproudofhisownability.(C)30.A)Fortheyarenothard-working.B)Fortheyaredon’thavegoodmemories.C)Fortheyhaven’tenoughtimeforit.D)Fortheyarebusywiththeirownlanguage.(B)31.A)Mindtakesclearerphotosofwhatwesee.B)Mindtakespicturesofallfivesenses.C)Mindspendslesstimetakingpictures.D)Mindkeepsphotosforlongertime.(B)32.A)Picturetaking.B)Memory.C)Languagelearning.D)Poemwriting.Passage3(C)33.A)Fortymillionpeople.B)Forty-fivemillionpeople.C)Overthreemillionpeople.D)Fivemillionpeople.(D)34.A)PeopleinfectedwithHIVvirusshouldwatchTVserieslike“DetectiveVijay”.B)GovernmentsshouldplayabigroleinfightingagainstAIDS.C)TVserieslike“DetectiveVijay”canmakealotofmoney.D)ThemediacanplayaneffectiveroleinfightingagainstAIDS.(D)35.A)Itisapoliceman.B)ItisaneducativeTVshowinIvoryCoast.C)ItisaneducativeTVshowinSouthAfrica.D)ItisaneducativeTVshowinIndia.SectionCTheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbooksandotherobjects.Ithasnewspapers,(36)_______publicationaswellaslettersof(37)_______interest.Italsohasmaps,photographs,art(38)_______,movies,soundrecordingsandmusical(39)_______.Alltogether,ithasmorethan100millionobjects.TheLibraryofCongressisopentothepublicMondaythroughSaturday,exceptforpublicholidays.Anyonemaygothereandreadanythinginthecollection.Butnooneis(40)_______totakebooksoutofthebuilding.TheLibraryofCongresswas(41)_______in1800.ItstartedwithelevenboxesofbooksinoneroomoftheCapitolBuilding.By1814,thecollectionhadincreasedtoabout3,000books.Theywereall(42)_______thatyearwhentheCapitolwasburneddownduringAmerica’swarwithTohelpre-buildthelibrary,CongressboughtthebooksofPresidentThomasJefferson.Mr.Jefferson’s(43)_______included7,000booksinsevenlanguages.(44)___________________________________________.Today,threebuildingsholdthelibrary’scollection.(45)___________________________________________.Itbuyssomeofitsbooksandgetsothersasgifts.Italsogetsmaterialsthroughitscopyrightoffice.(46)__________________________________________.ThismeantheLibraryofCongressreceivesalmosteverythingthatispublishedintheUnitedStates.答案:36.popular37.historical38.prints39.instruments40.permitted41.established42.destroyed43.collection44.In1897,thelibrarymovedintoitsownbuildingacrossthestreetfromtheCapitol45.ThelibraryprovidesbooksandmaterialstotheU.S.CongressandalsolendsbookstootherAmericanlibraries,governmentagencies,andforeignlibraries46.AnyonewhowantscopyrightprotectionforapublicationinU.S.mustsendtwocopiestothelibraryPartⅠWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopicTheOldandtheYoung.Youshouldwriteatleast120wordsaccordingtotheoutlinegivenbelowinChinese:老年人与年轻人之间常会发生冲突;谈谈你对这种现象的饿认识及解决的办法。TheOldandtheYoungOldpeoplearealwayssayingthatyoungpeoplearenotwhattheywere.Everynewgenerationisdifferentfromtheonethatprecededit.Todaythedifferenceisverymarkedindeed.Ontheonehand,theyoungarebettereducated.Theyhavealotmoremoneytospendandenjoymorefreedom.Theygrowupmorequicklyandarenotsodependentontheirparents.Theythinkmoreforthemselvesanddonotblindlyaccepttheideasoftheirelders.Ontheotherhand,theoldalwaysassumethattheyknowmoreforthesimplereasonthattheyhavebeenaroundabitlonger.Theydon’tliketofeelthattheirvaluesarebeingquestionedorthreatened.Andthisispreciselywhattheyoungaredoing.Theyarequestioningtheassumptionsoftheireldersanddisturbingtheircomplacency.Whattheyrejectmorethananythingisconformity.Traditionally,theyoungturnedtotheireldersforguidance.Today,thesituationisreversedtosomeextent.Theold—iftheyarepreparedtoadmitit—couldlearnathingortwofromtheirchildren.Perhapsamutuallybeneficialrelationshipbetweenthetwosidesismoreacceptablethanquarrelsandclashes.PartⅡReadingComprehension(SkimmingandScanning)(15minutes)HybridCarsHybridCars—AnInnovationforTodayHaveyoucheckedthepriceofgasolinelately?Haveyourecentlypaidmorethat$3.00pergallon?Isthesizeofthegastankinyourcurrentcarbiggerthaninthecaryouweredrivingafewyearsago?Howmuchdoesitcostyounowtofillupthegastankofyourcar?Areyoupayingmorethan$30,$40oreven$50tofillup?Takealookinthefuture,whatwillthepricepergallonbe2or3yearsfromnow?Whatwillitcostthentofillupthegastankofyourvehicle?Thereisstillalotoffossilfuelintheworldbutthefuelthatiseasytofindandtoextractfromthegroundisdisappearing.Thosesearchingfornewsuppliesoffossilfuelmustsearchinplacesthataremoredifficulttowork(duetothecold,theheat,thedepthofthewater,ortheunfriendlypoliticalsituationofthecountry).Thecostofthesearchcontinuestoincrease,asdoestheexpenseofextractingthefuel.Thisexpenseisnotonlymeasuredindollars,butalsointhedamagestotheenvironment.Nowthinkofwhatitmightcostyou2or3yearsinthefutureforatankofgasifyoucontinuetodrivethesametypesofvehicles.Theautomobileindustry,inforeigncountriesandintheUnitedStates,hasdevelopedthetechnologytohelpreducetheseenergyneedsandtodecreasepollution.Thisinnovationiscalledhybridcars.ThesecarsareavailableintheUStodayfrom2or3manufacturersandmanymoreareontheway.WhatAreHybridCars?Avehicleisahybridifithasmorethanonesourceofpower.Wehavehybridvehiclesallaroundussuchasdiesel-electrictrains,diesel-electricbuses,andnuclear-electricsubmarines.MaybesomeofyouremembertheMo-Ped,amodifiedbicyclethatusedacombinationofagasolineengineandmusclepowerofitsrider.Inasimilarmanner,thegasoline-electrichybridcarisacombinationofgasoline-poweredcarandanelectriccar.WhatIsReasonforDevelopingSuchaComplicatedCar?Therearetwomajorreasons:1)Toreducetailpipeemissionsand2)Toincreaseaveragegasmileage.Thesetwogoalsinteractwitheachothersothattheoverallperformanceofthehybridcarenhancesbothofthem,today’shybridsprovidegasefficiencyof40to60miles/gallon.Thehybridshavereducedemissionstoapproximately10%oftheJapanesestandardsoraboutequaltotheCaliforniastandards,whicharethemostrestrictiveintheUS.HowDoHybridCarWork?Therearetwotypesofhybridcars.Oneisknownastheparallelhybridandtheotherisknownasaserieshybrid.Bothtypesusethesamecomponents,whichare:SmallGasolineEngineFuelTankElectricMotorGenerator(usedmostlyintheserieshybrid)BatteriesTransmissionIntheparallelhybrid,thefueltanksuppliesgasolinetoengineandbatteriessupplypowertotheelectricalmotor.Boththeengineandtheelectricmotorcanturnthetransmissionatthesametime,andthetransmissionturnsthewheels.Anonboardcomputercontrolsthesystemsothatthemaximumefficiencyisobtained.Inaserieshybrid,thegasolineengineturnsagenerator,whicheitherchargesthebatteriesorpowersanelectricmotorthatdrivesthetransmission.Thegasolineengineneverpowersthevehicledirectly.HowDoTheseCombinationsMeettheDesiredGoals?Thekeytohybridcarperformanceisthatthegasolineenginecanbemuchsmallerthantheengineinaconventionalhighhorsepowercar.Buthowcanthisbewhenyouwillbecompetingonthehighwaywithmuchmorepowerfulautosontheroad?Theansweristhataconventionalenginemustsupplypowerforalldrivingconditions.Theengineneedstobepowerfulenoughtoaccelerateontoafreewayanduphills,butittouseonlyasmallpercentageofitspowerathighwayspeeds.Inahybrid,thegasolineengineprovidesthepowerathigherhighwayspeedsandthebattery-electricmotorcombinationprovidesthepowerforcitydrivingandforaccelerationneeds.Withthiscombination,eachpowersourceworksatitsoptimallevel.Someothertricksthehybridcarusestogetmoreefficiencyareasfollows:Thesystemreturnsenergytothebatterywhenitdecelerates.Whenyoupushonthebrakes,theelectricmotoractsasageneratorandrechargesthebattery.Thisenergyislostinaconventionalcar.Thehybridcanshutoffthegasolinemotorwhenitisnotneeded.Thisisveryimportantwhenyouaredoingstopandgodrivinginthecityandyouhavetostopalot(gasolineisnotwastedbyrunningtheengineatidlewhilethecarwaitsatatrafficlight.)Hybridcarsaredesignedwiththelatestaerodynamics.Thisreducesthedragathigherhighwayspeeds.Hybriduselow-rollingresistanttires.Thesearestifferandinflatedtoahigherpressureandcauseabouthalfthedragofconventionaltires.Therideisalittlerougherbutthegassavingcanbehuge.Hybridalsouseverylightweightmaterials.Thisreducestheoverallweightofthecarandthemileageisincreased.Theabovedesignswillprovideaveryusefulandcomfortableautothatalsogivesyouamaximumofgasmileage.Hybridsaresomewhatscarcerightnow(about3%ofthecarssoldintheUS)butshouldbeplentifulfornextyear’smodels(2005).Theabovedescriptionofhybridcarsismeanttobeonlyanintroductiontothisnewtechnology.Ifyouareinterestedingettingoneofthesemarvelouscarsinthefuture,youshouldstartyourinvestigationnow.Takeatestdriveinsomeoftheavailablehybridcars,youwillfindsomesurprises.Oneisthatthecarsareextremelyquiet,theyhaveadditionalinsulationinordertodecreasetheneedforairconditioningandheating(thepurposeistosaveenergybuttheresultingquietnessisaverynicebenefit).Asecondisthatthesecarsareverypeppy,unlikeearlyautomobilesdesignedforenergyconservation.Theadvantagesanddisadvantageswillvarywitheachmanufacturer,typeandmodelofthehybrid.Itwilltakealotoftimetolookatallthevariousmodelsbutitwillbewellworthitforyourfuturedrivingpleasure.(N)Thereisenoughfossilfuelintheworld,butitwillbedifficulttofindandtoextractitfromtheground.(Y)IntheUStoday,alotofmanufacturersaretryingtoproducehybridcarsinordertoreducetheseenergyneedsandtodecreasepollution.(Y)Mo-Pedisonekindofhybridvehicle.(NG)Thereareothertypesofhybridwhichusedifferentcomponents.(N)Inbothtypes,thegasolineenginecanworktodrivethetransmission.(NG)Themostimportantadvantageofhybridcaristhatitsgasolineenginecanbemuchsmallerthantheengineinaconventionalhighhorsepowercar.(Y)Thegasolineengineandthebattery-electricmotorinahybridworktogethertoprovidethepowerforcitydrivingandforaccelerationneeds.Hybridalsouselightmaterialstoreduce_________ofthecar.(theoverallweight)Theabovedesignscanmakeaveryusefulandcomfortablecarwhichcanalsogiveyou_________.(amaximumofgasmileage)Ifyouwanttogetonehybridcarinthefuture,youshould_________.(startyourinvestigationnow)PartⅣReadingComprehension(ReadinginDepth)(25minutes)SectionATheimpactofthefrontierhasbeentraditionallyassumedbyhistorians,whohavestudiedits1(H)onmountainmenandcowboys,ondifferentpoliticalandsocialinstitutions.Yettheimpactofthefrontieronthemostcommondimensionoflifeuponthefamilyremainslargely2(C).Althoughfamilyhasbeen3(L)significantinthehistoricalprocess,itisrelativelyanewareaofhistoricalresearch.Intermsofwestwardmigration,familyplayedaspecialrole.Forpeoplewho4(I)thechurchasmuchasthestate,familywastheonlyinstitutionthatcouldbeentrustedwiththeenterpriseofsettlingthecontinent.AChristianfamilywasenoughofthechurch;aChristainfamilywas5(E)expressionofpoliticalandsocialorder.In1862,Congressprovidedforthe6(O)oflandstoheadsofhouseholdsinalaw,butthatlawmerelyrecognizesthatsettlementhadbeenthebusinessoffamiliessincetheseventeenthcentury.Familiestookupthechallengeofthewesternlandsinavarietyofways.Somefamiliesmovedwestinloosely7(G)groupsmadeupoffamiliesinsimilardirections.Theydrewupconstitutionsandelectedleadersandgenerallyappliedthedemocraticprocesstothejourneywest.Thegovernment,foritspart,8(A)littlehelp—nomapsortransportation,notoolsoragriculturalinformation,nomedicalservicesandlittleprotection.Beyondthewestward-runningriverstherewasnoroaduntilwagonsleftdeep9(D)onthegroundsothatonecouldseeatrail—oruntilenoughwagonsbecamelostanddoubledbacktowarnothersagainsttheirmistakes.Nonetheless,theattractionof“freeland”wasirresistible.Onedayoranother,inawagontrainorallalone,afamilypackedits10(N)andlivestockandsetofftowardthenext“empty”videdusuallyunexaminedtrackssufficientbendorganizedeffectsmistrustedfarmingbargainespeciallyconsiderablebelongingsdistributionSectionBPassageOneInthepast,itwasbelievedthatdepressionwasmoreprevalentamongthepoorerandlesseducatedpeople,butthatisnotthecase.Thetruthis,depressioncanafflictpeoplefromallwalksoflife,andoftenithitsthemostambitious,creativeandconscientious.Itisfallacioustothinkthatpeopleonthecorporaterungofthesocialladderarenotprone(易于)tothismalady(疾病).Infact,executivesandprofessionalswhoareburdenedwithmountingpressuresintheirworkmaysuccumbtoallthesepressuresandbecomedepressed.ThesuicideofVincentFoster,Jr.,anotedAmericanlawyerandWhiteHouseofficialisacaseinpoint.Despitetheglamourofhisposition,whichmanypeoplethoughtenviable,thefeltoverburdenedwithpressuresanddecidedtotaketheeasywayout.Studiesshowthatpeoplebornlaterinthiscenturyhaveexperiencedmuchmoredepressionthanthosebornearlier.Infacttherateofdepressionoverthelasttwogenerationshasincreasedtenfold.Expertstheorizethatitcouldbeduetothefactthattheyoungergenerationshavehigherexpectationsfromlifeandarethereforemorelikelytosufferfromfailure,disappointmentandhence,depression.Depressioniseasilyrecognizable.Thedepressedpersonfeelssadordowninthedumps,andlosesinterestineventhemostpleasurableactivities.Moreover,hesuffersfromeithersignificantgainorlossofweight,sleeplessnessoroversleeping,sluggishmovementandthinking,fatigue,feelingsofguiltandworthlessness,impairedconcentrationandforgetfulness,andinextremecases,theafflictedpersonmayhavesuicidaltendencies.Itisoftenbelievedthatdepressionrunsinthefamily,butthisisnotconclusivelyso,sincetherearecaseswheredepressedpersonsdonothaveahistoryofdepressionintheirfamilies.Depressionisoftenwork-relatedalthoughattimesithasitsrootsinfamilyrelations.Peoplewhosufferfromdepressionneednotstayinthecloset,sinceitisnotasinorashametobedepressed.Apromptvisittoapsychologistmeansprompttreatmentandhencepromptrecovery.Expertsguaranteethatdepressioniseasilytreatable,andinnip-in-the-budcases,thepatientfullyrecoversinafewdays,thankstothevarietyofeffectivetreatmentavailable.(C)Accordingtotheauthor,depression_______.affectsthepoorandlesseducatedpeoplemorethantherichandsuccessfulonesseldomattacksexecutivesisnotlimitedtoanyparticularclassofpeopleiscausedbyone’sambition(A)Studiesshoedepression________.ismorecommontodaythaninthepastdecadeswasmorecommonintheoldgenerationsincreasedtentimesinthedaysofourparentsandgrandparentsafflictsonlyyoungpeople(D)WhichofthefollowingstatementsisNOTtrue?Veryhighexpectationsfortheindividualmakehimmorepronetodepression.Adepressedpersonfeelssadanddejected.Peopleneednotattempttohidetheirdepressionbecauseit’snotashamefulthing.Depressionishereditary.(B)Depressioncanbeeasilycured________.ifthepatientisyoungattheearlystageofthediseasewhenplantsareinbudifthepatientgoestoseeapsychologist(B)Thepassageismainlya________.descriptionofthesymptomsofdepressionbriefintroductionofdepressionsummaryofthecausesofdepressionlistoftreatmentofdepressionPassageTwoTeachersalwaysplandowntotheminutewhattheirstudentswillbedoing.Thisisgoodforkids,becauseitteachesthemtostayontaskandfollowaschedule.Butmosthomesaren’trunthisway.Ifparentsdoplantheirchildren’slivesminutebyminute,whathappenswhenthatchildgrowsupandgoestocollege?Atsomepoint,kidsneedtolearntomanagetheirowntime.Thiscanbeoneofthevaluableskillsyouhelpyourkidsdevelopoutsideofschool.Butitgenerallywon’thappenallbyitself,becausethere’sabigtransitionthathappenswhenkidsleavethestructuredschoolenvironmentandcomehome.Ifyouhavekidstayaloneathome,thinkhardabouttryingtofindanadultwhocanbethereandprovidethesupportyourchildneeds.Ifasupportiveadultisn’tavailable,anexpertnamedMartinrecommendsyoufindanafter-schoolprogramledbyexperiencedprofessionalswhowillengagethemincreativeactivities,nourishthemwithhealthysnacks,andassistthemwiththeirschoolwork.Ifyouareathomeonthecontrary,totakesomebreakaftertheguysgetstartedondiversions,becauseit’shardtostopanddosomethinglikehomework.“Ifthatlittlebitofdowntimeistelevision,goodluck…gettingthemtodotheirhomework.”saysaprofessorofchilddevelopmentatCaliforniaStateUniversity,“TVisaddictive.”Abetterwaytohelpyourchildunwindiswithahealthysnack.“Waituntildinner,makeaplatefullofenergizingfood.YoucouldevendishuppartofthedinneryouWhileyou’resharingasnack,youcanmakealistofwhatyourkidswillgettododuringtheirstudybreaks.Thetypesofbreaksrecommendedincludeshootingbaskets,gettingadrink,usingthebathroom,orevenplayingaquickcardgamewithparents.Yourkidscanbetheonestodecidewhichbreaksthey’dliketotake.But,asFreimuthsays,yourchildrenwillhavetobehonestaboutwhatkindofbreakwillenergizethemandnotupsettheirmomentum.(A)Themainpurposeofthispassageis_______.toprovidesomeadvicefortheparentsaboutchildren’seducationtoexplainhowtoprepareaprettysnackforyourchildrentoexplainwhytheparentsspoiltheirchildrentodescribechildren’slivesafterschool(B)Thewords“thisway”inthesentence“Butmosthomesaren’trunthisway”inthefirstparagraphmostpossiblymeans_______.tostayonthetasktoarrangeeverythingindetailstogivesomelessonstochildrentobehaveinthestructuredschool(C)Accordingtothepassage,theexpertnamedMartinmostprobablytakesupthefollowingjobsEXCEPT_______.aspecialistinchildreneducationaprofessionalconsultantinaafter-schoolprogramtheleaderofaresearchgroupaboutsports,suchasbasketballmostlythesameaswhatFreimuthdoes(D)Accordingtothelasttwoparagraphs,theappropriatesnacksthattheparentsprovidewill_______.upsetthechildren’smomentumexhaustthembylotsofdirtydishesmakethechildrengetaddictedtoTVbringmoreenergytochildren(C)WhichofthefollowingisNOTrecommendedforthebreakduringthechildren’sstudyafterclass?Shootbaskets.Playsomegameswithparents.Goouttodrinksomebeverageinabarforalongtime.Relaxabitbyusingthebathroom.PartⅤCloze(15minutes)Mostparents,Isuppose,havehadtheexperienceofreadingabedtimestorytotheirchildren.Andtheymusthave1howdifficultitistowritea2children’sbook.Eithertheauthorhasaimedtoo3,sothatthechildrencan’tfollowwhatisinhis(ormoreoften,her)thestory,4thestoryseemstobetalkingtothereaders.Thebe
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 2024顶级担保协议协议样例
- 2024年鱼类购销专项协议范本
- 2024年光伏技术合作协议样本
- 2024年行政赔偿协议模板
- 2024年度企业设备采购内部控制协议
- 2024环保型进户门交易协议书
- 2024重要会议场所租赁协议
- 2024年装修工程承包协议明细
- 2024专业司机陪同车辆租赁服务协议
- 2024年度商业大厦建设简易协议协议
- 从局部到整体:5G系统观-概要版-vivo通信研究院
- GB/T 22844-2009配套床上用品
- GB/T 14683-2017硅酮和改性硅酮建筑密封胶
- 无人机校企合作协议
- GB 16809-2008防火窗
- 《百团大战》历史课件
- 八年级上册道德及法治非选择题专项训练
- 2023年徐州市国盛控股集团有限公司招聘笔试题库及答案解析
- 机械课程设计~二级减速器设计教程
- 国家开放大学《传感器与测试技术》实验参考答案
- 工程造价司法鉴定实施方案
评论
0/150
提交评论