Mechanical Engineering Practice 金工實習知到智慧樹期末考試答案題庫2025年南京理工大學

MechanicalEngineeringPractice金工實習知到智慧樹期末考試答案題庫2025年南京理工大學Withtheadditionofsomesupportingtechnologieslike（）,etc.AMtechnologycanbepossibletomanufactureavastrangeofdifferentpartswithdifferentcharacteristics.

答案:silicon-rubbermolding；drills；polishers；grindersWhileearlierworkinJapanisquitewell-documented,provingthatthisconceptcouldberealized,itwasthepatentbyCharlesHullthatisgenerallyrecognizedasthemostinfluential

sinceitgaveriseto3DSystems.

答案:對WhileearlierworkinJapanisquitewell-documented,provingthatthisconceptcouldberealized,itwasthepatentby()thatisgenerallyrecognizedasthemostinfluentialsinceitgaveriseto3DSystems.

答案:CharlesHull（USA）Whichofthefollowingoptionsareobservedphasesduringopticalmicroscopyobservationofironandsteel?()

答案:α-ferrite；γ-austenite；δ-ferrite；CementiteWhichofthefollowingoperationsarestepsofmetallographicspecimenspreparation?()

答案:etching；mounting；grinding；polishingWhichofthefollowingmaterialsarenatural?()

答案:bone；fibers；feather；clayWhichofthefollowingisnotafunctionofrenderings?(

)

答案:communicatewithdownstreamindustryWhichofthefollowinggatesisaverycommontypeofgateusedtoconnectacoldrunnertotheedgeofamoldcavity?()

答案:edgegateWhichkindofvehicleshavetheabilitytotakeoffwithoutarun-upandlandwithoutarun？

答案:helicopters；quadrotorsWhichisthemostwidelyusedAMtechniqueatthepresentday？

答案:FusedDepositionModeling(orFDM)WhichcanbeusedbyAdditiveManufacturing？

答案:liquids；sheets；wires

；powdersWhicharethesametechniqueswithAdditiveManufacturing？

答案:freeformfabrication；3Dprinting；additivefabrication；RapidPrototypingWhicharethecharacteristicsofAMtechnology？

答案:superiorflexibility；

instantlocalproductiononaglobalscale

；shortleadtime

；near-netshapingWhichapparatuswasAMtechnologycommercializedwith?

答案:Stereolithography(SLorSLA)Whetherapartisqualifieddependsfirstonwhetherithasreachedthebasicsize.

Justequaltothebasicsizemustbequalifiedproducts.（）

答案:錯WherecouldAdditiveManufacturingbeused?

答案:aerospace；defense

；automotive；medical

；architecture

；art；jewelryWhenwedoprogramminginMasterCAMweneedtomovethedrawingtotheoriginofthecoordinates.

答案:對Whenweareresearchingexistingproducts,thefollowingpointsneedtobeconsidered.(

)

答案:price

；

material；function

；appreciationWhenmeasuringworkpiecewithverniercaliper,themeasurementerrorwillincreaseiftheforceistoolargeortoosmall.

（）

答案:對Whatrelationshipsarestudiedinmaterialsscience?()

答案:processing；structure/composition；properties；performanceWhatarethestepanalysisprocessfortheanalysisanddesignofvents?()

答案:Theairdisplacementrateshouldbeestimatedrelativetothemeltflowrate.；Thenumber,type,andlocationofventsmustbeassessed.；Thewidth,length,andthicknessofeachventmustbespecified.Whatarethecomponentsofejectionsystemininjectionmold?()

答案:ejectorpins；ejectorblades；ejectorsleeves；stripperplatesWellsuitingtherequestsofmodernmanufacturingclimate,AdditiveManufacturingisviewedasthenewindustrialrevolution,makingitswayintoacontinuouslyincreasingnumberofindustries.

答案:對Weseethatheavier-than-airaircraftare(

)

答案:gliders

；rocketsweneedtomakethemodelinginthesoftwaressuchas（

）

答案:AutoCAD；Creo；SolidworksWeneedselecttheparametersoftheroughmachiningandthefinishmachining.

答案:對WeChoosethe

keyseatcutteraccordingtotheprocessingrequirements.

答案:對WecancompleteanautomaticprogrammingofNClathebasedon(

)software.

答案:MasterCAM.Wecanchoosethelatheaccordingtotherequirementsofthepartsprocessing.

答案:對Vernierprotractor’sreadingprincipleassameastheverniercaliper.

答案:對Verniercalipersaresuitablefor（）sizemeasurementandinspection.

答案:MediumaccuracyUseavernieruniversalanglerulertomeasuretheworkpiece.Ifthemeasuredangleisgreaterthan90°andlessthan180°,add（）tothereading.

答案:90°Typically,therearefourmainmethodsofrapidprototyping.

（）

答案:對TherearemanyAMmethodsintheworld,AMtechniquescanbeclassifiedinto3kinds,basedoninputmaterial:

答案:Liquid-based；Solid-based；Powder-basedTherearedevicesbetweenaircraftandrotary-wingvehicles.Thesearetheso-calledhelicopters,whichhavetheabilitytotakeoffwithoutarun-upandlandwithoutarun.

答案:錯Theworkingprincipleofthedialindicatoristoconvertthelinearmovementofthemeasuringrodintoapointer（）throughtherackandgeartransmission.

答案:SwingmotionThevernieruniversalanglerulercanmeasureanyanglefrom0°to360°.

答案:錯Thevernieruniversalanglerulercanmeasureanyanglefrom0to360degrees.

（）

答案:錯Theverniercaliperwithareadingvalueof0.02mm,thescalespacingontherulerbodyis0.02mmlargerthanthescalespacingonthevernier.

答案:對Theuseofmaterialsbeginsin().

答案:stoneageTheupperdeviationofasizemustbegreaterthanthelowerdeviation.

答案:對Thetwo-plateinjectionmoldissonamedsinceitconsistsoftwoassembledsections.

答案:對ThethinnereachlayerisnotthecloserthefinalpartwillbetheoriginalinAM.

答案:錯ThetermRapidPrototyping(orRP)isusedinavarietyofindustriestodescribeaprocessforrapidlycreatingasystemorpartrepresentationbeforefinalreleaseorcommercialization.

答案:對Thetemperatureofthemoldedpartsatthetimeofejectionisnotacomplexfunctionfothemoldedpartdesign,coolinglinedesign,materialproperties.

答案:錯Thesurfaceroughnesssymbolrepresentsthemachinedsurfaceobtainedbymaterialremoval.

（）

答案:錯Thesurfaceroughnesssymbolindicatestheprocessedsurfaceobtainedbythenon-removalmethod.

答案:錯Thesurfaceroughnessofpartsisdirectlyrelatedtotheprocessingmethod.（）

答案:對ThesuccessoftheOXOpeelerisdueto(

).

答案:antiskidfeatures

；beautifulappearance

；

innovativeapplicationofmaterialsTheSTLfiledescribestheexternalclosedsurfacesoftheoriginalCADmodelandformsthebasisforcalculationoftheslices.

答案:對Thestandardizationofthebasicdimensionsisto().

答案:simplifythespecificationsandquantityoffixed-valuetoolsandmeasuringtoolsThestandardrecommendsthatthearithmeticmeandeviationRaofthecontourbepreferredbecauseofitssimplemeasurementmethod.

答案:錯Therougherthesurfaceofthepart,thebetterthewearresistance.

答案:錯Theprocessingmethodsincludemillingtheshape,millingtheplanar,chamferring,drillingholesandsoon.

答案:對Theprimaryfunctionoftheinjectionmoldfeedsystemistoconveythepolymermeltfromthenozzleofthemoldingmachinetothemoldcavities.

答案:對ThepartingplaneoftheinjectionmoldislocatedbetweentheAandtheBplates.

答案:對Thepartingplaneisthecontactsurfacebetweenthestationaryandmovingsidesofthemold.

答案:對Theouterdiametermicrometerisameasuringtoolformeasuringapertureandgroovedepth.

（）

答案:錯Themolddisignerdoesnotneedfirstdeterminethemoldopeningdirectiontodesignthepartingplane.

答案:錯Themicrometerdoesnothavetousearatchetmechanisminthemeasurement.

答案:錯ThemajorwaysthatAMmachinesdifferareinthematerialsthatcanbeused,howthelayersarecreated,andhowthelayersarebondedtoeachother.

答案:對Themajoradvantageofaquadrotoroveratraditionalhelicopteristhefixedrotorpropulsionmode.Theroll,pitchandyawofaquadrotorchangesdependingonthethrottleineachrotor.

答案:對Themachiningallowanceofroughturningmustbereservedforfineturning.

答案:對Thelargepointerofthedialindicatorrotatesbyonedivision,indicatingthatitsrodmovesby0.01mm,sothereadingvalueofthedialindicatoris0.01mm.

答案:對ThekeytohowAMworksisthatpartsaremadebyaddingmaterialinlayers:eachlayerisathincross-sectionofthepartderivedfromtheoriginalCADdata.

答案:對Theinnerdiameterdialindicatorandtheinnerdiametermicrometercanreadthemeasuredsizedirectlyfromthemeasuringinstrument.

答案:錯Theinformationdisplaydesignoftheproductmustconformtothetransmissioncharacteristicsofhumanvisual,auditory,tactileandothersensorychannels,soastoensurethattheinformationcanbeobtainedquicklyandaccurately.

答案:對Thehigherthegeometriccomplexity,thegreatertheadvantageAMhasoverCNC.

答案:對The

helicopter

uses

gravity

and

updrafts

of

airto

keep

it

flying;

slope

soaring

relies

onwind

rising

off

dunes

or

hillsides.

答案:錯Thegeometrictoleranceistolimittheshapeerrorofthepart.

答案:錯Thedivisionvalueofthecommonlyusedmicrometeris0.01mm.

答案:對Thedeterminationof()onspecimensisimportantforqualitycontrol.

答案:grainsizeThecoolingtimeisdefinedastheamountoftimerequiredafterthemoldisfilledforplastictobecomesufficientlyrigidtoeject.

答案:對Thecoaxialitytolerancebelongsto（）tolerance.

答案:OrientationTheassemblyprocessofthehelicoptermodelneedstobeverycareful,payattentiontoeverydetail,including(

)

答案:Glue；DirectionoftheapronpartTheAMmachinemustbeproperlysetuppriortothebuildprocess.Suchsettingswouldrelatetothebuildparameterslikethe（）,etc.

答案:materialconstraints；energysource；layerthickness；timingsSurfaceroughnessbelongstomicrogeometricerror.

（）

答案:對Structuralmaterialsinclude().

答案:iron

；steel

；aluminumStepsofmetallographicspecimenspreparationinclude().

答案:etching

；mounting

；grinding

；polishingServicesNetworkisnotamajordriverofindustry4.0.

（）

答案:錯Serviceisalsoakindofproduct.（

）

答案:對Relativemeasurementmethodisusedwhenmeasuringlengthwithpercentilemeter.

（）

答案:對Programsgeneratedbyadedicatedpost-processorcanbeprocesseddirectlywithoutprogramdebugging.

答案:對Productdesignincludes（

）.

答案:improveddesign

；innovativedesign；conceptualdesignPositiontolerancecanbedividedintothreecategories:directionaltolerance,positioningtoleranceandrunouttolerance.（）

答案:對Pearliteisatwo-phased,lamellarstructurecomposedofalternatinglayersof().

答案:ferriteandcementitePayingattentiontoindustrialdesignisApple'swaytosuccess.（

）

答案:對Partsurfaceafterprocessing,nomatterhowsmoothandflatyouthinkbythenakedeye,underamicroscope,thesurfaceisstillrough.

答案:對Parallelismtolerancebelongsto（）toleranceinpositiontolerance.

答案:OrientationOneofthemostimportantobjectivesofventingdesignisreleascompressedair.

答案:對Observedphasesduringopticalmicroscopyobservationofironandsteelinclude().

答案:α-ferrite

；γ-austenite

；δ-ferrite

；CementiteObjectivesinmoldejectionsystemdesigninclude().

答案:allowmoldtoopen；minimizecoolinginterference；minimizecomplexityandcostObjectivesinmoldcoolingsystemdesigninclude().

答案:minimizemoldcost；minimizevolumeandcomplexity；facilitatemoldusageNear-netshapingisanotherimportantfeatureofAMtechnology,whichsignificantlyminimizesmaterialuseandwaste.AjointstudyhasshownthatAMisabletoreducetheconsumptionofrawmaterialsbyupto

答案:75%Naturalmaterialsinclude().

答案:bone

；fibers；feather

；clayMUJIproductshaveveryrichcolors.（

）

答案:錯Moldventingdesignobjectivesinclude().

答案:releasecompressedair；containplasticmelt；minimizemaintenanceMolddesignisonesignificantactivityinamuchlargerproductdevelopmentprocess.

答案:對Measuringtheroundnesserrorcanbeusedinthreepointmethod.

答案:對Materialscienceistheinvestigationoftherelationshipamong().

答案:processing

；properties

；performance；structure/compositionMatchingholeandshaft,thesizeoftheholeisφ40+0.15+0.05mm,thesizeoftheshaftisφ400.-0.10mm,andtheirgapis（）.

答案:0.25Manufacturingresources

just

include

technicalresources

and

materialresources.（）

答案:錯Likemanyothertechnologies,AMcameaboutasaresultoftheinventionofthecomputer.

答案:對Itisnotnecessarilythatthetwocavitymoldhastwocavitiestoproducetwomoldingsineachmoldingcycle.

答案:錯Ironcanbeclassifiedinto().

答案:greycastiron

；whitecastiron；spheroidalgraphitecastironIndustry4.0beganinthe18centurywiththeintroductionofmachinerymanufacturingequipment.

（）

答案:對Industrialdesignappearedbeforetheindustrialrevolution.（

）

答案:錯Inusingtheinnerdiametermicrometer,inordertoreducethemeasurementerror,themaximumvalueshouldbefoundintheradialsectionand（）intheaxialsection.

答案:MinimumvalueInthiscourse,whichpartdoestheknowledgeof“injectionmolding”belongto?

答案:Manufacturing;Inthesecondindustrialrevolution,large-scaleproductionusingelectricdriveswasappeared..

（）

答案:對Inthesamelocationtestseveraltimes,takethemaximumvalueasthemeasuringresults.

答案:錯Inthemarkingofthesurfaceroughnesscode,theparametercodemaynotbemarkedwhenthe（）parameterisused.

答案:RaInthecompany-wideprogramlayer,wegenerallyuse

ManufacturingExecutionSystems.（）

答案:錯Inmostmoldingapplications,thepolymermeltdoesnotneedtraverseportionsofboththemoldheightandthemoldwidth.

答案:錯InMasterCAMwecanseetherouteoftheknife.

答案:對Ininjectionmold,thecoreinsertretainerplateisalsocalledBplate.

答案:對Ininectionmold,thecavityinsertretainerplateisalsocalledAplate.

答案:對Inclearancefit,theactualsizeoftheholeisalwaysgreaterthanorequaltotheactualsizeoftheshaft.

答案:對Inaninjectionmold,whichplatesmustbenon-standardparts?()

答案:Aplate；BplateIfthemicrometerscrewpitchis0.5mm,thescaleonthecircumferenceofthedifferentialcylinderis（）.

答案:50equalpartsHot-airballoonsisakindofspacecraftsflyinspacewithoutoxygen.

答案:對HighspeedCNCmachiningcangenerallyremovematerialmuchslowerthanAMmachinescanaddasimilarvolumeofmaterial.

答案:錯Glider

a

heavier-than-air

craft

with

flapping

wings.

A

flapping

motion

of

wings

is

used

inflight

by

various

living

beings,

such

as

birds.

答案:錯Functionalmaterialsinclude().

答案:superconductingmaterials

；magneticmaterialsDuringtheplasticationstage,thepolymermeltisforcedfromthebarrelofthemoldingmachineandintothemold.

答案:錯Dimensionaldeviationisthedifferenceofacertainsizeminusitsbasicsize,sothesizedeviationcanbepositive,negativeandzero.

（）

答案:對Digitizationisthroughouttheprocess

ofProductLifeCycle.（）

答案:對Digitalistheprocessthatintegratedapplies

()totransformtraditionalcontentandtechnologysystem.

答案:computertechnology；informationtechnology；

networktechnologyDigitaldesignandmanufacturemainlyincludes()

fordatatransmission.

答案:DigitalmeansDesignsketchcanhelpdesignerstoclarifydesignideasquickly.

（

）

答案:對Designisacreativeactivitythataimstoestablishthemultidimensionalqualitiesofobjects,processes,services,andthesystemstheyconstitutethroughoutthelifecycle.

答案:objects；processes；servicesComparedtotwo-platemold,whichperformancemeasuresofthree-platemoldarenotpoor?()

答案:gatingflexibility；initialinvestmentComparedtosteel,whataretheadvantagesofplastics?（）

答案:betterplasticity；lowdensity；bettercorrosionresistance；betterprocessingperformanceClassicblueisthepopularcolorof(

).

答案:2020Castironincludesgraycastiron,whitecastironandnodularcastiron.

答案:對Beforeyouusemeasuringtools,youshouldcleanthemwithwaterslowly.

答案:錯Automaticprogrammingisefficientandcanmeetallrequirements.

答案:錯Aninjectionmoldisconstructedofanumberofplates,boltedtogetherwithsocketheadcapscrews.

答案:對Aninjectionmoldhasmanystructurestoaccomplishthefunctionsrequiredbytheinjectionmoldingprocess.

答案:對AMtechnologywasoriginallydevelopedaroundpolymericmaterials,waxesandpaperlaminates.

答案:對AMmachineisaWhatYouSeeIsWhatYouBuild(WYSIWYB)processthat’sparticularlyvaluablethemorecomplexthegeometryis.

答案:對AllcommercializedAMmachinestodateusealayer-basedapproach.

答案:對AllA