注：不含主觀題第1題單選題(2分)Whendrillingthecenterholeinthefirstmachiningprocessofthesteeringknuckle,thefirstpositioningdatumis()ACylindricalendBCylindricalsurfaceCFlangesurface第2題單選題(2分)Thecenterholeforpositioningshaftpartsbelongsto（）AFinedatumBCoarsedatumCAuxiliarydatumDSelf-baseddatum第3題單選題(1分)Whendrillingthecenterhole,alongV-shapedblockisusedforpositioning,andthenumberofuncertaintieseliminatedis（）A3B4C5D6第4題單選題(2分)Whenselectingafinedatum,sometimesagroupofauxiliarydatums(

)forprocesspositioningcanbespeciallyprocessedonthepart

ACoincidencemachiningaccordingtodatum

BConvenientformutualdatumprocessing

CConvenientforunifieddatumprocessingDImprovepartstiffness第5題單選題(1分)Whenturningtheoutsidecircle,thepositioningdatumis(

),Eliminationofuncertainty(

)AOutercircle5BOutercircle6CCenterhole5DCenterhole6ExercisesforVideo3第1題單選題(2分)Thefirstlocationdatumof16flatmillingprocessis（

）AFlangesurfaceBCylindricalendCCenterholeD32diameteroutercircle第2題單選題(2分)Thepositioningschemeusedinthe16flatmillingprocessis（

）AOverpositioningBCompletepositioningCUnderpositioningDIncompletepositioning第3題單選題(2分)ThepositioningschemeadoptedintheprocessofmillingΦ26bossis(

)AOverpositioningBUnderpositioningCCompletepositioningDIncompletepositioning第4題單選題(2分)Whichistheprocessrouteofupperandlowereartaperhole（）ADrilling-expanding-reaming

BBoringCDrilling-expanding-pullingDRoughturning-finishingturning第5題單選題(2分)Thefixtureusedforroughturningthemainpinholeis(

）ASpecialfixtureBUniversalfixture-fourjawchuckExecisesforVideo4第1題單選題(2分)IntheprocessofdrillingflangeplateM8bottomhole,tappingandchamfering,themachinetoolis（）AVerticaldrillingmachineBRadialdrillingmachineCFour-axisdrillingandtappingspecialmachine第2題單選題(2分)Thepositioningdatumoftheendandchamferofthemainpinholeis(),thenumberofuncertaintieseliminatedis()ADiameter56cylindricalsurface-4,flangeend-1,side–1BDiameter56cylindrical-2,flangeend-3,side-1CDiameter32cylindrical-4,flangeend-1,side-1

DDiameter32cylindrical-2,flangeend-3,side-1第3題單選題(2分)Thepositioningschemeoffinishturningthemainpinholeis（

）AThefirstpositioningdatumisthediameter56outercylindricalsurfacetoeliminate4uncertainties;theflangeendandsidesurfaceseliminate1uncertaintyrespectively.BThefirstpositioningdatumistheflangeendtoeliminate3uncertainties;thesecondpositioningdatumistheoutercylindricalsurfacewithadiameterof56toeliminate2uncertainties;thesidesurfaceeliminates1uncertainty第4題單選題(2分)Whenmillingthediameter26counterbore，thepositioningelementis(

)，thenumberofuncertaintieseliminatedis（）ASmallplane-1,taperpin-4,stoppin-1BLargeplane-3,floatingtaperpin-2,stoppin-1CMandrel-4,smallplane-1,stoppin-1ExericesforVideo5第1題單選題(2分)WhenmillingΦ20boss,thetoolis（）ACylindricalmillingcutterBFacemillingcutterCFormingmillingcutter第2題單選題(2分)WhengrindingtheΦ28journal,thefunctionoftheclampis(

)wheninstallingtheworkpiecewiththedoublecenter,clampanddial

APreventaxialmovementoftheworkpiece;BForcircumferentialpositioningCDrivetheworkpiecetorotate第3題單選題(2分)ThepositioningdatumformillingΦ28journalendfaceis（）A32diameteroutercylindricalsurface,flangeendBΦ46kingpinholeendsurface,mainpinhole,journal第4題單選題(2分)Howtoensuresize42（）ASetthetooltwiceBInstalltwothreesideedgemillingcutterswiththesamediameteratintervalstomilltwosurfacesatthesametimeCSetthetoolonceandinstalltheworkpieceturnaroundExercisesforVideo6第1題單選題(2分)WhendrillingM10threadedbottomhole,thepositioningdatumis（）AΦ28journal,flangeendfaceBΦ46mainpinhole,mainpinholeendface,Φ28journal第2題單選題(2分)WhenprocessingthechamferofM10hole,themachinetoolandtoolare（）ALathe,45°offsettool

BVerticaldrillingmachine,countersink第3題單選題(2分)Whenprocessingtheopening,themachinetoolandtoolare（）AHorizontalmillingmachine,middletoothsawblademillingcutterBSawingmachine,circularsawbladeMechanicalManufacturingProcessDesign第1題單選題(3分)Thefirstpartoftheprocessdescriptionselection.Ordersaredisrupted,andyoushouldselecttherightone.()Roughturningoutercircleφ57andendfaceA,roughturningoutercircleφ45andendfaceB

()Roughturningoutercircleφ30andendfaceC,roughturningoutercircleφ22andendfaceD

()Millingendfaceanddrillingcenterhole

()FormingturningR2.5

()Finishturningoutercircleφ56.4andendfaceA,finishingturningoutercircleφ44.4andendfaceB,finishingturningoutercircleφ28.4andendfaceC,threadINGM20×1.5-6h,chamfering1.5×45°

A34125B23154C24513D24531第2題單選題(3分)Thesecondpartoftheprocessdescriptionselection.Ordersaredisrupted,andyoushouldselecttherightone.()Drilling,expandingandreamingφ15taperhole(1station,3steps,modularmachinetool,twistdrill,reamingdrill,reamer)()Millingbothsidesoftheflatsurfacewiththicknessof16toensurethethicknesssizeof16±0.15(1station,1step,horizontalmillingmachine,three-sidedfacemillingcutter)()Drilling4flangeholes,chamferingandtapping(1station,3steps,verticaldrillingmachine,twistdrill,tap)()Millingφ30boss(1station,1step,verticalmillingmachine,facemillingcutter)()Drilling,expandingandreamingφ14taperhole(1station,3steps,modularmachinetool,twistdrill,reamingdrill,reamer)()Drilling,expandingandreamingφ46.2holes(1station,3steps,modularmachinetool,twistdrill,reamingdrill,reamer)A421635B354612

C642135D516243第3題單選題(1分)Thethirdpartoftheprocessdescriptionselection.Ordersaredisrupted,andyoushouldselecttherightone.()Countersinkφ26counterbore

()Millingtheendfaceofφ46.2hole

()Millingφ20boss

()Millingtwoplanestoensuresize42A1243

B2143

C1324D3214第4題單選題(3分)Th