试题答案+机械专业外语

1、第 18/* Arabic18 页机械专业外语在线考试复习资料2021版一、单选题1.()improvedtheperformanceandenhancedthecapabilitiesofbothpeopleandmachineswithinspecializedmanufacturingcomponents.A.ManualB.MechanizationC.IntegrationD.Automation答案：D2.FMSisarandomlyloadedautomatedsystembasedon()manufacturinglinkingintegratedcomputercontrol

2、andagroupofmachinestoautomaticallyproduceandhandle(move)partsforcontinuousserialprocessing.A.grouptechnologyB.computertechnologyC.networktechnologyD.informationtechnology答案：A3.CAD/CAMsystemscanentailawholenewsetofdraftingphilosophies,allofwhich()productivity.A.lowB.enhanceC.degenerateD.deteriorate答案

3、：B4.Thereisanindustrialtrendtoward()productionofawidervarietyofproductsinordertomeettherisingdemandforspeciallyorderedproductsintodaysaffluentsocieties.A.massB.batchC.low-volumeD.large-volume答案：C5.Arobotwhosemainframeconsistsofthreelinearaxesiscalleda()robot.A.CylindricalB.HumanoidrobotC.softD.Carte

4、sian答案：D6.Ithasalsoshownthat,inmanufacturing,mostparts()anumberofdifferentmachiningoperationsontheirvarioussurfaces.A.requireB.hasC.requiresD.have答案：A7.ProgrammingforNCmaybedonemanuallyorwith()assistance.A.workerB.computerC.expertD.programmer答案：B8.ContouringsystemofNCisknownasthe()pathsystem.A.smoot

5、hB.discreteC.continuousD.slick答案：C9.()iswritteninbinary,witheachinstructioncontaininganoperationcodeandanoperand.A.EngineeringlanguageB.EnglishC.ChineseMachineD.language答案：D10.Thesourceofenergyinelectro-beammachiningishigh-velocity(),whichstrikethesurfaceoftheworkpieceandgenerateheat.A.electronsB.at

6、omsC.particlesD.neutrons答案：A11.Thetermelectricalmachiningmaybeappliedtoagroupofprocessesthatemployanelectriccurrentordischargeto()material.A.addB.removeC.heatD.soften答案：B12.Drawingsshouldbecarefullycheckedtoseethatthedimensioningisdoneinamannerthatwillbemostconvenientandunderstandabletothe()departme

7、nts.A.purchaseB.marketC.productionD.sale答案：C13.Jigsandfixturesarealikein()theybothincorporatedevicestoensurethattheworkpieceiscorrectlylocatedandclamped.A.whichB.thoseC.theseD.that答案：D14.Thetwistdrillhas()cuttingedgesandtwohelicalflutesthatcontinueoverthelengthofthedrillbody.A.oneB.twoC.threeD.four答

8、案：B15.Themainfunctionofthe()ismountingofthecuttingtoolsandgeneratinglongitudinaland/orcrossfeeds.A.headstockB.carriageC.tailstockD.chunk答案：B16.Thermalsprayingmetalcoatingsaredepositionsofmetalwhichhasbeenmeltedimmediately()projectionontothesubstrate.A.afterB.whenC.priortoD.with答案：C17.Inelectropolish

9、ing,themetalisremoved()fromthesurfaceofthemetalobjectbeingpolished.A.atombyatomB.moleculebymoleculeC.electronbyelectronD.ionbyion答案：D18.Incylindricalgrinding,the()isheldbetweencentersduringthegrindingoperation.A.workpieceB.cutterC.abrasivewheelD.wroktable答案：A19.()angleistheanglebetweenthefaceoftheto

10、olcalledtherakefaceandthenormaltothemachiningdirection.A.ClearanceB.RakeC.CuttingD.Tool答案：B20.Areciprocatingscrewinjectionmoldingmachinecombinesthe()ofanextruderandacompressivemoldingpress.A.conditionsB.functionsC.materialsD.structures答案：B21.Themajorityofthestructuralcomponentsproducedbyfixeddiepres

11、singare()basedinpowdermetallurgy.A.AluminiumB.plasticC.carbonD.iron答案：D22.Closed-dieforgingisverywidelyusedfor()productioninindustry,inwhichthemetalisshapedbypressingbetweenapairofforgingdiesA.smallB.largescaleC.massD.median答案：C23.Ariserisanextravoidcreatedinthemoldtocontain()moltenmaterial.A.poured

12、B.injectedC.muchD.excessive答案：D24.Hardeningistheprocessofheatingapieceofsteeltoatemperature()oraboveitscriticalrangeandthencoolingitrapidly.A.belowB.withinC.equalD.big答案：B25.Insintering,ceramicpowdersareprocessedintocompactedshapesandthenheatedtotemperaturesjust()themeltingpoint.A.equalB.aboveC.belo

13、wD.equals答案：C26.()manufacturingusingsimplehandtoolswasactuallyintegratedmanufacturing.A.IntelligentB.FlexibleC.ManualD.Networked答案：C27.A()isagroupofNCmachinetoolsthatcanrandomlyprocessagroupofparts,havingautomatedmaterialhandlingandcentralcomputercontroltodynamicallybalanceresourceutilizationsothatt

14、hesystemcanadaptautomaticallytochangesinpartsproduction,mixes,andlevelsofoutput.A.CIMSB.CAD/CAMC.IMD.FMS答案：D28.CAD/CAMisthetechnologyconcernedwiththeuseofdigitalcomputerstoperformcertainfunctionin()andproduction.A.designB.drawingC.manufacturingD.fixture答案：A29.Theirmanufacturingapproachinvolvedsuchpr

15、inciplesasdepartmentalizationbyproductratherthanby()andminimizingtheroutingpaths.A.maintainanceB.processC.worktypeD.numberofpersons答案：B30.TheRoboticsInstituteofAmericadefinesarobotas“areprogrammablemultifunctionmanipulator()tomovematerial,parts,tools,orotherspecializeddevicesthroughvariableprogramme

16、dmotionsfortheperformanceofavarietyoftasks.”A.usedB.appliedC.designedD.employed答案：C31.Itwasnotedthateachmachine,regardlessofhowhighlyitisautomated,isdesignedtoperformbasically()typeofoperation.A.eachB.everyC.onlyD.one答案：D32.TheprogramofNCcontainsinstructionsand().A.commandsB.proceduresC.routinesD.sy

17、mbols答案：A33.Inpoint-to-pointsystemofNC,eachaxisofthemachineisdriven()byleadscrewsand,dependingonthetypeofoperation,atdifferentvelocities.A.simultaneouslyB.separatelyC.collectivelyD.jointly答案：B34.()controlstheinputandoutputofinformationbetweenthecomputerandtheoutsideworldthroughtheI/Osection,synchron

18、izesthetransferenceofsignalsbetweenthevarioussectionsofthecomputer,andcommandstheothersectionsintheperformanceoftheirfunctions.A.ALUB.diskC.controlunitD.usb答案：C35.ThebasicprincipleutilisedinLBMisthatunderproperconditionslightenergyofaparticularfrequencyisusedtostimulatetheelectronsinanatomtoemitaddi

19、tionallightwithexactlythesamecharacteristicsofthe()lightsource.A.capturedB.oldC.newD.original答案：D36.Withtheexceptionof(),conventionalmethodsofremovingmaterialfromaworkpiecearenotreadilyapplicabletothesenewmaterials.A.grindingB.millingC.drillingD.cutting答案：A37.Beforeconstructionormanufacturecanbegin,

20、itisnecessarytohavecompleteassemblyanddetail()toconveyallnecessaryinformationtotheshopmen.A.drawingsB.manualsC.instructionsD.conditions答案：A38.Aftertheworkpiecehasbeenmarkedout,itisstillnecessarytopositionitwithrespecttothe()movements,andtoclampitinthatpositionbeforemachiningisstarted.A.toolB.headsto

21、ckC.machineD.tailstock答案：C39.Indrillingoperations,acylindricalrotary-endcuttingtool,calleda(),isemployed.A.cuttingedgeB.toolC.machinetoolD.drill答案：D40.The()isthemainframe,involvingahorizontalbeamontwoverticalsupports.A.lathebedB.headstockC.spindleD.tailstock答案：A41.High-energyprocessescanaltertheprop

22、ertiesofthesurfaces()changingthedimensionofthesurfaces.A.withB.withoutC.byD.for答案：B42.Theabrasive()areembeddedinthelap,ortheymaybecarriedthroughslurry.A.wheelsB.bindersC.particlesD.sands答案：C43.Grindingisconsideredtobeafinishingprocessthatisusuallyusedforobtaininghigh-dimensionalaccuracyandbettersurf

23、ace().A.toughnessB.hardnessC.roughnessD.finish答案：D44.Above80%ofallthemachinetoolsusedinthemanufacturingindustryhaveundergonemetal().A.cuttingB.castingC.forgingD.sintering答案：A45.Ingeneral,()whicharecapableofbeingbroughttoastateoffluiditycanbeinjection-molded.A.metalsB.compositesC.polymersD.alloys答案：C

24、46.Themetalpowderiscompactedbyplacinginaclosed()cavityunderpressureinpowdermetallurgy.A.plasticB.metalC.woodD.sand答案：B47.Onevaluablefeatureofforgingisthatit()thestrengthofthemetalbyrefiningthestructureandmakingituniform.A.improvesB.improveC.reduceD.reduces答案：A48.Castingsarepartsthataremade()theirfin

25、aldimensionsbyacastingprocess.A.euqalB.exactC.closetoD.respectto答案：C49.Thoseportionsoftheiron-carbondiagramnearthedeltaregionandthoseabove()carboncontentareoflittleimportancetotheengineerandaredeleted.A.2%B.3%C.4%D.5%答案：A50.Forindustrialpurposes,materialsaredividedintoengineeringmaterialsor()materia

26、ls.A.metalB.ceramicC.polymerD.nonengineering答案：D51.Modernmanufacturingencompassesalloftheactivitiesandprocessnecessarytoconvert()materialsintofinishedproducts,deliverthemtothemarket,andsupporttheminthefield.A.oldB.rawC.metalD.alloy答案：B52.DefinitionsofFMS,orFlexibleManufacturingsystem,areplentifuland

27、inmanyrespectsaredependentontheultimateusers()astowhattheFMSconsistsofandhowitwillbeused.A.viewB.thinkingC.pointofviewD.workscope答案：C53.CAD/CAMisatermwhichmeanscomputer-aideddesignand().A.computer-aidedmakingB.computer-aidemakingC.computer-aidedmanagementD.computer-aidedmanufacturing答案：D54.Grouptech

28、nologyisamanufacturingphilosophythatinvolvesidentifyingandgroupingcomponentshaving()orrelatedattributesinordertotakeadvantageoftheirsimilaritiesinthedesignand/ormanufacturingphasesoftheproductioncycle.A.similarB.identicalC.equalD.same答案：A55.Industrialrobotsare()thesciencefictiondevicesthatpossesshum

29、an-likeabilitiesandprovidecompanionshiptospacetraveler.A.likeB.notlikeC.similartoD.analogousto答案：B56.Knownasmachiningandturningcenters,thesemachineshaveflexibilityandversatility()othermachinetoolsdonothave.A.thanB.moreC.thatD.which答案：C57.Aprogramfornumericalcontrolconsistsofasequenceof()thatcausesan

30、NCmachinetocarryoutacertainoperation,machiningbeingthemostcommonlyusedprocess.A.variablesB.functionsC.languageD.directions答案：D58.NumericalControlisaformofprogrammableautomation()whichtheprocessingequipmentiscontrolledbymeansofnumbers,letters,andothersymbols.A.inB.ofC.forD.within答案：A59.Asweknow,thece

31、ntralandessentialingredientofCAD/CAMisthe().A.hardwareB.digitalcomputerC.softwareD.mouse答案：B60.Laserbeammachiningutilisesthe()fromthecoherentlightbeamscalledlaser.A.lightB.heatC.energyD.radiation答案：C61.Therecentincreaseintheuseofhard,high-strength,andtemperature-resistantmaterialsinengineering()nece

32、ssitatedthedevelopmentofnewmachiningtechniques.A.isB.areC.haveD.has答案：D62.Thedesignofamachineincludesmanyfactors()thoseofdeterminingtheloadsandstressesandselectingthepropermaterials.A.suchasB.otherthanC.forexampleD.thatis答案：B63.Ithasalreadybeenstatedthattheworkpiecemustbelocated()cuttingtool,andbese

33、curedinthatposition.A.relativetoB.veticaltoC.paralleltoD.against答案：A64.Drillinginvolvesproducingthroughorblind()inaworkpiecebyforcingatool,whichrotatesarounditsaxis,againsttheworkpiece.A.shaftsB.groovesC.holesD.chamfers答案：C65.Alatheisa()usedprimarilyforproducingsurfacesofrevolutionandflatedges.A.gri

34、ndingmchineB.machiningcenterC.drillingmachineD.machinetool答案：D66.Electroplatingisanelectrochemicalprocessbywhich()isdepositedonasubstratebypassingacurrentthroughthebath.A.metalB.plasticC.alloyD.powder答案：A67.Lappingisafinishingoperationusedonflatand()surfaces.A.cubicB.cylindricalC.rectangleD.square答案

35、：B68.()isamanufacturingprocessthatinvolvestheremovalofmetalbyemployingarotatingabrasivewheel.A.CuttingB.ForgingC.GrindingD.Casting答案：C69.Theimportanceofmachiningprocessescanbeemphasisedbythefactthateveryproductweuseinourdailylifehasundergonethisprocesseitherdirectlyor().A.friendlyB.widelyC.significa

36、ntlyD.indirectly答案：D70.Injectionmoldingisthepredominantprocessforfabricationof()intofinishedforms.A.thermoplasticsB.metalsC.powdersD.alloys答案：A71.Powdermetallurgyuses()processformakingvariouspartsoutofmetalpowder.A.sinteringB.ColdUniaxialPressingC.HotIsostaticPressingD.ColdIsostaticPressing答案：A72.Fo

37、rgingisanimportant()process.A.machiningB.hot-formingC.castingD.heattreatment答案：B73.Castingisamanufacturingprocessinwhich()metalispouredorinjectedandallowedtosolidifyinasuitablyshapedmoldcavity.A.moltenB.gasC.solidD.orginal答案：A74.Heattreatmentistheoperationofheatingandcoolingametalinits()statetochang

38、eitsphysicalproperties.A.gasB.solidC.liquidD.any答案：B75.Scientistsoftenclassifymaterialsbytheir():solid,liquid,orgas.A.stateB.volumeC.shapeD.purpose答案：A二、多选题76.CVDcoatingprocessesincluding().A.conventionalCVDcoatingprocessB.diamondCVDcoatingprocessC.plasma-assistedCVDcoatingprocessD.thin-filmcoatings

39、答案：ABC77.Thelapoflappingcanbemadeof().A.castironB.copperC.leatherD.cloth答案：ABCD78.Methodsforcylindricalgrindingare().A.theplunge-cutmethodB.thefull-depthmethodC.directcuttingmethodD.thetransversemethod答案：ABD79.Thefunctionsofcuttingfluidsare()andetc.A.coolthetoolandworkpieceB.reducethefrictionC.prote

40、cttheworkagainstrustingD.improvethesurfacefinish答案：ABCD80.Someofthestepsthatcanbetakentoreduceorientationininjectionmoldingareasfollows().A.FasterinjectionB.HighermeltandmoldtemperaturesC.ReducedpackingtimeandpressureD.Reducedgatesize答案：ABCD81.Whatarethedisadvantagesofpowdermetallurgy?()A.metalpowde

41、rsmaydeterioratequicklyB.fixedandsetupcostsarehighC.non-moldablefeaturesareimpossibletoproduceD.sharpcornerscanbehardtoproduce答案：ABCD82.Whichstatementsarecorrectwithrespecttoforgingprocesses()?A.dimensiontolerancesareusuallypositiveB.dieweartolerancesarelateraltolerancesC.dieclosuretolerancesrangefr

42、om1mmto6.25mmD.dieweartolerancesareroughly+0.5%forCopperalloysto+0.2%forAluminumandSteel.答案：ABC83.Castingprocessesincludes().A.sandcastingB.Full-moldcastingC.InvestmentcastingD.centrifugalcasting答案：ABCD84.()aretheheattreatmentprocesses.A.HardeningB.TemperingC.AnnealingD.Normalizing答案：ABCD85.Someimpo

43、rtantpropertiesofmetalsinclude().A.highdensityB.fracturetoughnessC.plasticdeformationD.highstrength答案：ABCD86.Commonsurfacetreatmentscanbedividedinto().A.coverthesurfacesB.alterthesurfacesC.alterdimensionD.varyappearance答案：AB87.Twobasicmechanismsareinvolvedinthepolishingprocessare().A.lowcostB.fine-s

44、caleabrasiveremovalC.softeningandsmearingofsurfacelayersD.highproduction答案：BC88.Thereareseveralvariations,(),ofsurfacegrinding.A.symmetricalspindleB.verticalspindleC.horizontalspindleD.rotationalspindle答案：BC89.Theimportantcharacteristicsexpectedofacuttingtoolmaterialare()andetc.A.HigherhardnessB.Hot

45、hardnessC.WearresistanceD.ToughnessandLowfriction答案：ABCD90.Injectionmoldingcombinesmanyareas,forexample,()andetc.A.metalcuttingB.molddesignC.rheologyD.materialsscience答案：BCD91.Thematerialtypesofpowderusedinpowdermetallurgycanbe().A.allthematerialsB.elementalC.pre-alloyedD.partiallyalloyed答案：BCD92.Wh

46、icharethefeaturesofhydraulicforgingcomparingtodrop-forge().A.equipmentisexpensiveB.largepiecesaregreaterstrengthC.lessnoiseD.lessvibration答案：ABCD93.SandCastingOperationconsistsofmultiplestages,forexample().A.PatternsmakingB.CoresmakingC.SandmixingD.Sandforming答案：ABCD94.Surfacehardeningprocessesincludes().A.CarburizingB.CarbonitridingC.CyanidingD.Nitriding答案：ABCD95.Engineeringmaterialsma