机电专业英语复习题及答案.doc

(完整版)机电专业英语复习题及答案机电专业英语期末复习试题一选择题1.Ifallpointsinalinkagemoveinparallelplanesthesystemundergoesplanarmotionandthelinkagemaybedescribedasa_.A.planarmotionB.planarlinkageC。jointsD。slide2。Thoughframematerialanddesignshouldhandledamping, _aresometimesbuiltintoframesectionstohandlespecificproblems.A.beamsB。holesC。dampersD。screw3.Themaximumallowabledeflectionofashaft_determinedbycriticalspeed，gear,orbearingrequirements。A.oftenB.mustC.wasD。isusually4。Wewillhaveto_tobetterandbettersolutionsaswegeneratemoreinformation。A。repeatmanytimesB.iteratingC.iterateD.tryways5.Ifaproductconfigurationis_specifiedandthenexaminedtodeterminewhethertheperformancerequirementsaremet。A.finallyB.tentativelyC。temporaryD.havebeen6。Manufacturingcanbedefinedasthe_ofrawmaterialsintousefulproductsthroughtheuseoftheeasiestandlestexpensivemethods.A。transformationB。processingC.processD。transforming7.Theplanerandkneetypesofmillingmachineis_becauseofitsflexibility.A.usedmostcommonlyB.mostpopularC。themostcommonlyusedD。mostpowerful8.Asaresult,thesystemwillvibrateatthefrequencyofthe_forceregardlessoftheinitialconditionsornaturalfrequencyofthesystem.A。actionB.excitationC.outD.act9。Beforetwocomponentsareassembledtogether,therelationshipbetweenthedimensionsofthematingsurfaces_.A。mustbegivingoutB.shouldprintedclearlyC.mustbespecifiedD.shouldbeclearlynoted10.Themainpracticaladvantageoflowerpairsistheirbetterabilitytotraplubricantbetweentheir_surfaces.A。envelopingB.matingC。outerD。outside11.Theword_itselfusuallyreferstothedeteriorationofmetalsandceramics,whilesimilarphenomenainplasticsgenerallycalled_.A。recrystallization.corrosionB.recrystallizationdegradationC.degradationcorrosionD。corrosiondegradation12.Mostframes_castiron，weldsteel,composition,orconcrete.A.aremadefromB.aremadeupofC.wasproducedbyD。wasconsistof13。Rotatingshaftsparticularlythosethatrunathighspeeds,mustbedesignedtoavoidoperationat_speeds.A.lowB.overloadC.criticalD.hollow14。Althoughcastironisafairlycheapmaterial，eachcastingrequiresa_。A.patternB。modelC.moldD.patent15.Theterm_isusedtodescribejointswithsurfacecontact，aswithapinsurroundedbyahole.A.highpairB。lowpairC。surfacepairD。rotarypair1-5：BCDCB610:ACBCA11-15DACAB二阅读1.Lassiewasabigdog。Shewasveryclever.Shewasalwayshelpingsomeone。Oncesomebadmentooksomemoneyfromanoldman。Theytiedhimupwitharopeandlefthimonthefloor。TheykeptLassieinanotherroom。Lassietriedtoopenthedooroftheroom.Butshecouldnt.Therewasalargewindowintheroom,butitwastoohighforLassietoreach.Shepulledachairovertowindowandstoodonit.Shepushedandpulledandpulledatthewindowandatlastgotitopen。Withagreatjump，shegotout.Lassiecamebackintothehouseandfoundtheroomwheretheoldmanwasleft.Sheuntiedtheroperoundtheoldmansarmsandlegs.Thenshehelpedhimoutofthehouseanddowntheroadtothenearesthouse。(）1.Lassiewas_。A。ababyB。acatC。adogD。agirl（）2。Oncesomebadmentoolsomemoneyfrom_.A.ayoungmanB.ayoungwomanC.anoldwomanD。anoldman()3.Lassie_thedooroftheroom。A.didntopenB。openedC。shutD。didntshut(）4._untiedtheoldman.A.AgirlB.AcatC.AwomanD。Lassie()5。_caughtthebadmen.A。ThedogB.LassieC。ThepolicemenD。Thegirl2.Mr。Georgeworksattheschoollostandfound。Heworksverycarefully。Everyday,whenhegetsalostthing,hetakesnotesaboutit。Therearepens,books，schooluniforms，keys,walkmansandmanyotherthingsinthelostandfound.Mostofthemarethestudents。Ifyouloseyourthings,itseasyforyoutogotothelostandfoundforhelp。ButyoumusttellMr.Georgewhatitisanditscolorandthedaywhenyoucantfindit。IthinkMr.Georgeisveryhelpful,andyouwillbehappywhenyoufindthelostthere。()6。Whoworksattheschoollostandfound?A.Mr.BrownB.Mr。KingC.Mr。GeorgeD.Nobody（)7。Thereare_thingsinthelostandfound.A.noB.fewC.afewD.many(）8。MostthingsMr。Georgetakescareofarethe_.A。boysB.girlsC.studentsD.teachers(）9.Ifyouloseyourthings,youdbettergotoask_。A.BenB。Mr.GeorgeC。yourteacherD.yourparents（)10.Ifyouloseyourthingsandgotothelostandfoundforhelp，youneednttellMr。George_。A。WhatitisB.howmuchitisC.itscolorD.thedaywhenyoulostit.3.Thestudentswerehavingtheirchemistry(化学）class.MissLiwastellingthechildrenwhatwaterwaslike。Afterthat，sheaskedherstudents，Whatswater？”NoonespokeforafewminutesMissLiaskedagain，“Whydontyouanswermyquestion？DidntItellyouwhatwaterislike？”Justthenaboyputuphishandandsaid，“MissLi，youtoldusthatwaterhasnocolourandnosmellButwheretofindsuchkindofwater？Thewaterintheriverbehindmyhouseisalwaysblackandithasabadsmell”Mostofthechildrenagreedwithhim“Imsorry，childrensaidtheteacher，“OurwaterisgettingdirtieranddirtierThatsaproblem(）11.Thestudentswerehavingtheir_classAEnglishBChineseCchemistryDmaths(）12MissLiwastellingthechildrenwhat_waslikeAwaterBairCearthDweather（)13Aboysaid,”Thewaterintheriverbehindmyhouseisalways_”AwhiteBblackCcleanDclear（)14Mostofthechildren_theboyAagreedwithBwrotetoCheardfromDsentfor(）15Thewaterintheriverhascolourandsmellbecauseitisgetting_AmoreandmoreBlessandlessCcleanerandcleanerDdirtieranddirtier15：CDADC610:CDCBB11-15:CABAD4.Workingdrawingsarethecompletesetofstandardizeddrawingsspecifyingthemanufactureandassemblyofaproductbasedonitsdesign.Thecomplexityofthedesigndeterminesthenumberandtypesofdrawings.Workingdrawingsmaybeonmorethanonesheetandmaycontainwritteninstructionscalledspecifications。 Workingdrawingsareblueprintsusedformanufacturingproducts。Therefore,thesetofdrawingsmust:（a）completelydescribetheparts，bothvisuallyanddimensionally;（b)showthepartsinassembly；(3)identifyalltheparts;and（4）specifystandardparts。Thegraphicsandtextinformationmustbesufficientlycompleteandaccuratetomanufactureandassembletheproductwithouterror。Generally，acompletesetofWorkingdrawingsforanassemblyincludes：（1）Detaildrawingsofeachnonstandardparts。(2)Anassemblyorsubassemblydrawingshowingallthestandardandnonstandardpartsinasingledrawing。(3)Abillofmaterials（BOM）.(4)Atitleblock.Adetaildrawingisadimensioned，multiviewdrawingofasinglepart，describingthepartsshape,size，material,andsurfaceroughness,insufficientdetailfortheparttobemanufacturedbasedonthedrawingalone.Detaildrawingsareproducedfromdesignsketchesorextractedfrom3Dcomputermodels。TheyadherestrictlytoANSIstandardsandthestandardforthespecificcompany,fordimensioning,assigningpartnumbers,notes,tolerances，etc。Inanassembly,standardpartssuchasthreadedfastenersandbearingsarenotdrawnasdetails,butareshownintheassemblyview.Standardpartsarenotdrawnasdetailsbecausetheyarenormallypurchased,notmanufactured,forassembly.Forlargeassembliesorassembledwithlargeparts，detailsaredrawnonmultiplesheets,andaseparatesheetisusedfortheassemblyview。Iftheassemblyissimpleorthepartsaresmall,detaildrawingsforeachpartofanassemblycanbeplacedonasinglesheet.Multipledetailsonasheetareusuallydrawnatthesamescale.Ifdifferentscalesareused，theyareclearlymarkedundereachdetail.Also，whenmorethanonedetailisplacedonasheet,thespacingbetweendetailsiscarefullyplanned,includingleavingsufficientroomfordimensionsandnotes.1.Basedonthemessage，whichofthefollowiswrong？A)standardpartsneedntdrawnasdetailsB）forsimpleparts,sometimesneednttodrawthedetailworkingdrawingC）forlargeassembliesdetailsmaydrawnonmultiplesheetsD）Ifdifferentscalesusedinasinglesheet,theyshouldclearlymarkedundereachdetail2。WorkingdrawingsforanassemblyMAYNOTincludes：？A）BOMB）titleblockC）AnassemblyorsubassemblydrawingD)Detaildrawingsofallparts。3.Fordetaildrawing,Whichoneofthefollowingstatementisnottrue？A)shouldnothasdifferentscalesB)Detaildrawingcanproducedfromdesignsketchesorextractedfrom3Dcomputermodels.C）detaildrawingisadimensioned,multiviewdrawingofasinglepartD)shouldAdherestrictlytoANSIstandards4.FromthemessagewecaninferANSIis_?A）asetoflawB）asetofnotificationC)anOrganizationD)IEEEgovernment5.Thetopicofthemessageis_？A）Howtodesignworkingdrawings.B）workingdrawingscharacterandthekeyinfluenceofhowtodrawaworkingdrawingC）Inthedesignprocess，whatshouldbeconsidered？D）WhatisworkingdrawingBCACD5.Oneprincipleaimofkinematicsistocreate（design）thedesiredmotionsofthesubjectsmechanicalpartsandthenmathematicallycomputethepositions，velocities，andaccelerations,whichthosewillcreateontheparts。Since,formostearthboundmechanicalsystems,themassremainsessentiallyconstantwithtime，definingtheaccelerationsasafunctionoftimethenalsodefinesthedynamicforcesasafunctionoftime.Stresses，inturn,willbeafunctionofbothappliedandinertial（ma）forces。Sinceengineeringdesignischargedwithcreatingsystemswhichwillnotfailduringtheirexpectedservicelife,thegoalistokeepstresseswithinacceptablelimitsforthematerialschosenandtheenvironmentalconditionsencountered。Thisobviouslyrequiresthatallsystemforcesbedefinedandkeptwithindesiredlimits。Inmachinery,thelargestforcesencounteredareoftenthoseduetothedynamicsofthemachineitself.Thesedynamicforcesareproportionaltoacceleration，whichbringsusbacktokinematics,thefoundationofmechanicaldesign.Verybasicandearlydecisioninthedesignprocessinvolvingkinematicprinciplescanbecrucialtothesuccessofanymechanicaldesign;adesignwhichhaspoorkinematicswillprovetroublesomeandperformbadly.Anymechanicalsystemcanbeclassifiedaccordingtothenumberofdegreeoffreedom（DOF）whichitprocesses。ThesystemsDOFisequaltothenumberofindependentparameterswhichareneededtouniquelydefineitspositioninspaceatanyinstantoftime。Arigidbodyfreetomovewithinareferenceframewill,inthegeneralcase,hascomplexmotion,whichisasimultaneouscombinationofrotationandtranslation.Inthreedimensionalspace,theremayberotationaboutanyaxisandalsosimultaneoustranslationwhichcanberesolvedintocomponentsalongthreeaxes.Inaplane，ortwodimensionalspace,complexmotionbecomesacombinationofsimultaneousrotationaboutoneaxis（perpendiculartotheplane）andalsotranslationresolvedintocomponentsalongtwoaxesintheplane1、KinematicsresearchfocusonthefollowingEXCEPT_.。A)accelerationsB)forceC)positions，D)velocities2、Fromthepassagethatforthedesignengineerthefirstandmostimportantis_A)theservicelifeofamachineB）thematerialschooseC)thedegreeoffreedomD)kinematicprinciples3、Anmechanicalsystemhasuniquelydefinedpositioninspaceatanyinstantoftimethat_.A)ItshouldhasoneDOFB）ItshouldHastwoDOFC）theDOFandthenumberofindependentparametersshouldequalD)ItshouldhasanyDOFaswant4、whichoneofthefollowingisNOTTRUE_?。A)Arigidbodyfreetomoveinthree-dimensionalspacemayrotationaboutanyaxisB）Arigidbodyfreetomoveinthree-dimensionalspaceisasimultaneouscombinationofrotationandtranslationC)Arigidbodyfreetomoveinthree-dimensionalspacecanberesolvedintocomponentsalongthreeaxesD)Arigidbodyfreetomoveinthree-dimensionalspacemayhascomplexmotion5、Thebesttitleforthispassagewouldbe_。A）kinematicsB）dynamicsC)kinematicsanddynamicD）theimportantofkinematicsBDCAC三翻译（加书上的)1.Agearcanbegrippedaxiallybetweenashoulderontheshaftandaspacer,withtorquebeingtransmittedthroughakey。一个齿轮可以用轴肩和挡圈进行轴向固定，并通过键来传递。2.Oneormorememberssuchasgears，sprockets，pulleys，andcamsareusuallyattachedtotheshaftbymeansofpins，keys,splines，snaprings,andotherdevices。 一个或多个诸如齿轮，链轮，皮带轮和凸轮等类的构件通常借助于销、键、花键、卡环或其它装置连接到轴上。Interchangeability means that identical parts must be interchangeable, i.e。, able to replace each other， whether during assembly or subsequent maintenance work； without the need for any fitting operations。互换性意味着在相同的零件之间必须能够进行互换。无论是在装配时还是在其后的维修时,这些零件都可以互相取代而不需任何修配工作.四单词短语1 mechatronic 机电一体化（技术） 2 sensor传感器 3 hydraulic液压的4 machine tool机床 5 robot机器人 6 drill钻床，钻头7 Lathe车床 8 mill 铣床 9 grinder磨床 10 shaft轴 12 screw螺杆 13 tolerance公差15 spring弹簧16 key键 17 bearing轴承 18 coupling联结器19 clutch离合器 20 digital 数字（式)的 21 lever杠杆 22 Servomechanism伺服机构 23 actuator 传动装置 24 following device随动装置 25 viscosity 粘性26 density 密度27 discipli