輪機英語關(guān)聯(lián)題題庫(帶翻譯)解析

1ofthetappetassembly(7),twotubularpushrods(4)withballjoints,twonodularcastironrockerarms(2)suspendedinarockerarmbearingbracThetappetrollersfollowthecamprofilesandtransferthemovementsthroug第4題Therockerarmsoperatetheinletandexhaustvalvesthroughyokes(5).第2題Thetappetassemblyreceiveslubricatingoilviachannelsintheengineblockfromthemainsupply第4題Tocompensateforheatexpansionaclearancemustexistbetweentherockerarmandyoke.第1題All注：根據(jù)文章來看，調(diào)節(jié)閥間隙的最好時間是在發(fā)動機啟動之前。注：滾輪和挺桿組件借助于主潤滑系統(tǒng)潤滑。A.tappetrollersB.pushrodsC.nod注：根據(jù)文章來看，閥驅(qū)動機構(gòu)不包括球墨鑄鐵。(包括挺桿滾輪、頂桿、吊梁和導(dǎo)銷)A.Theonebetweenthecamandthetappetroller.B.Theonebetweenthepushrodsandthebanjoints.注：依據(jù)保養(yǎng)清單，要緊密的關(guān)閉閥件，應(yīng)檢查搖臂和吊梁之間的間隙。2(airtrunk).Thetrunkisbolted第2題(B)BycontrolingthewaterflowthroughtheLTcoThecirculatingcoolantwatershoud第4題Checkdaily,duringoperationoftheengine,theworkingoftheteltaleholairreceiver.Thefunctionofthisholeistoinformtheoperatorthepresenceofwaterinthe4.ThefunctionofthetelltaleholeistoA.detectwhethercompressedairhasescapedfromtheholeB.controlthecoolantinle注：警報孔或監(jiān)視孔的作用是同志作業(yè)員掃氣箱中有水。teltalehole監(jiān)視孔，指示孔，警報孔；Passage3(原題庫第6篇)第1題Atthefirststart,listencarefullyforpossiblejarringsounds.Ifanythingissuspected,stoptheenginebearingsandofallotherbearingswhichhavebeenopened.Makevisualinspectionfrombelowtothecandpistonskirtswhichhavebeenopened.Ife3Estimatetheconditionofthe-listenforjarringsounds.Running-inismainlyintendedtoletpistonrFig.4-4Running-inprocedureeachloadandconsequently注：從第一段可知，如果聽到震動聲，應(yīng)快速停車，或讓它低速運行5分鐘，然后停車并檢查所有部件。4A.releaseairfromtheengineB.treatthecirculatingwaterifnecessaryA.periodicallyatsteadyloadB.occaA.noleakageoflubricatingoilshouldbechecked.C.qualityoftheleakoilmustbewatchedD.thenumberoftheleakingfuellinesshouldbecheckedPassage4(原題庫第18篇)第2題ThecoolingwaterintheHT(hightemperature)circuitcoolsthecylinderliners,cylinderheadsandmanifoldthewaterisd第3題ThereturnwaterfromthecylinderheadsandturbochargerissuppliedtotheHTaircooler.Inthefirststageofthiscooler,mostoftfromacentralcooler.BycontrollingtpriorofstartingupandloadingonHFO,ofutmostimportance.A.seawaterfromacentC.freshwaterfromaHTcircuit注：冷卻發(fā)動機的冷卻水被迫進入汽缸體然后向上進入汽缸頭(缸蓋)A.thechargeairtemperaturewillbecomehigherB.thechargeairtemperaturC.theHTwatertemperaturewillremainconstantD.theHTwatertemperaturewillbecomelower5A.AhightemperaturecoolingwPassage5(原題庫第19篇)Theengineisstartedwithcompressedairofma第2題Onthemomentthemainstartingairvalveisoperatedalsothegovernorboosterisenergized.)ThemainA.(1),(5),(4),(2),(3)B.(1),(4),(5),(3),(2)C.(1),(4),(3),(2),(5)B.hydraulicoilispumpedintothegovernorbooster3.WhichofthefollowingA.apressuretransmitterPT301B.anon-returnval4.WhentheengineisA.thecontrolairB.thesPassage6(原題庫第20篇)wherebythepilotpistonfortheenginecylinderwhichisinstartingpopistondown.Shortlybeforetheexhaustvalvesastartingairsystemisde-aerated,thepressuredropsquickly6meansthatthepilotplungerstouchthecamonlyduringthestarIfapilotlineriswornout,pressitout.Itmaybenecessarytoheatthedistributorup注：根據(jù)文章來看，啟動空氣分配器的襯套磨壞時，可更換。changeable可更換的注：啟動過程中，當(dāng)發(fā)動機轉(zhuǎn)速達到發(fā)火轉(zhuǎn)速時，主啟動空氣閥關(guān)閉。C.liftedoffthecamD.pressedontothecamrepeatedly注：當(dāng)部分汽缸允許壓縮空氣進入時，啟動空氣分配器的先導(dǎo)活塞被壓到凸輪上。第1題Satisfactoryandproperoperationoftheenginedependsnotonlyoncorrectmanoeuvringbutalsoonhowwelltiskeptinorder.Regularmaintenanceoftheenginehelpsalalongserviceaswellastheworkingefficiencyoftheengine.InsTheindividualpartsoftheengineshouldbeinspectedandthoroughlycleanedatregularintervals.第2題Theefficiencyoftheoperatorinlocatingtroublesandremedyingthemintime.pipesbycarefullylooseningthescrewp第3題Ifsomepartsoftherunninggeararedismantled,beforeusingtheturninggear,makesurethatnoloosepartsarejammedinthecrankcasewhereitiseasifnecessary.第4題Ifthepistonrodstuffingboxiscarefullyhandledandthoroughlygreased,itrequiresoverhaultheoriginalvalueandtheworn-outpartsreplaced.C.enginepartsshouldbekeptinorderD注：為保持發(fā)動機良好工作，他應(yīng)該正確的操縱并定期保養(yǎng)。A.whetherthelubricatingoilandfuelareofgoodquality注：檢修周期的長短主要取決于：滑油和燃油品質(zhì)是否良好；船舶負載情況；操作員是否能找出故障以及是否7rA.somepartsoftherunninggeB.duringdismantlingwork,lubricationlinesandorificesaresealedoffD.pipesarerelievedofpressurebeforetherepairworkA.Whensomepartsarewornout.B.WhentheC.Whenithasnotbeencheckedforsometime.D.Wh注：活塞移除時(吊缸時),需檢修活塞桿填料箱。Passage8(原題庫第24篇)第1題Iftheenginedoesnotstartonair,itmaybeduetooneormoreofthefollowingcauses:startingairpressuretoolow,incorrecttimingofstartingairvalves,oneormoreofthestartingairvalvesstulineclosed,orifstartingafterworkingontheen第2題Iftheenginedoesstartonair,butcombustiondoesnotimmediatelybegin,thecausemaybelowFailureoffuelinjectionisusuallyduetotroubleinthefuelinjectionpumps.第3題However,theinjectionmaybedelayed,thoughthepumpsareingoodorder,ifthefuellinestotheinjectionvalveshavenotbeen第4題Iftheactionoftheengineindicatesthatsomeofthecylindersarenotfiring,theonesaffectedmaybeA.theturninggearis2.Ifcombustiondoesnotbeginrightaftertheenginehasstartedonair,theA.ThetimingoffuelpumpsincorrectB.ThecompressionislowA.testingthestartingairpressureC.checkingtheactionoftheengineD.cleaningtheturninggearPassage9(原題庫第26篇)determinesthemaximumweightoffuelthatcanbeburnedperworkingstrokeinmaximumpowerthatcanbedevelopedbytheengine.Ifthecharge-airdensityisincreased8entersthecylinder,agreateraprincipleofexhaustturbo-charging.Intoday'spractice,thegases.Theturbo-blowercomprisesaga第1題(B)Thepowerproducedintheturbinemustbeequaltothatrequiredbythecompressor.Theairispumpedintothecylinderthroughtheinletports.Theturbo-blowerisprovidedwithafilter-silencer.第2題Itisusuallydesirabletofitchargtheexhausttemperatureandtheengine第4題Itisveryimportantthateachcylindershouldbewellscavengedbeforethechargedairiscompressedotherwisethisfreshairchargewillbefouledbytheresidualexhaustgasesfromthelastcvcle.第3題ThenecessaryscavengingisobtainedbyprovidingasatisfaA.TheairispumpedintotheB.Thepowerproducedintheturbinedoesnothavetobeequaltothatrequiredbythecompressor.注：壓氣機工作時，不正確的說法是：渦輪產(chǎn)生的功率不一定必須等于壓氣機所需功率。A.lowertheairtemperature注：安裝增壓空氣冷卻器的主要目的是：增加流入汽缸的增壓空氣量。A.Tocompressthecharge-a注：可提高掃氣效果的措施：增大增壓空氣總管的壓力，降低排氣總管背壓，(獲得較好的壓差)4.WhyisitveryimportanA.BecausethetemperaturedifferencebetweD.Becausethepressuredifferencebetween注：增壓空氣被壓縮之前，每個汽缸充分掃氣的原因：新填充的空氣會被廢氣污染。Passage10(原題庫第27篇)第4題(A)Theframeismadeofcastiron.第2題Theturbochargermounting,thehousingfortheaircoolerandthesecuredbymeansofthreadedstudsandnutsthataretighten9bearings.Theopeningshavecovers,someofwhichareprovidedwithcrankcaseexplosionreliefvalvesthatequalizehowever,bedrainedofftoaspecialbottomtank,sothattheenginerunswithwhichisofthesametype,isdrivenbyaclutchmountedontheendofthecrankshaftor,forpropulsionplantA.theconstructionofanengineB.howtheengineworks2.WhichofthefollowingisNOTmentA.TurbochargermountingB.BearingcapsC.Aircoolerhousing3.ThecamshaftC.willnotdrivealube4.WhichofthefollowingisNOTtrue?D.Reliefvalvesareprovidedontheframe.Passage11(原題庫28篇)第2題(A)Thecylindercoverismadeofcastironandisprovidedwithtwoinletvcentralmountedfuelinjectionvalveandanindiboresinthethickbottomofthecover.Eachoftheradialboresisconnectedtotwosidebores.ThecoverhasfurtherseparateboresthatleadtothecoTighteningiseffectedbymeansofhydraulictools,andsealingbymeansofathinringmountedbetweenthecylindertheconnectingrodjournal,tothebushingforthegudgeonpin.Thisbushingisprovidedwithanannulargropinandthepistontopistoncoolingchamber.A.cylindersandcylinderc注：這篇文章主要是關(guān)于汽缸蓋和活塞的。2.Whichofthefollowingmaybeprovidedontopofthecylindercover?注：排氣閥閥座由水冷卻。A.Thepistonsarecooledbyoil.B.Fo注：活塞冷卻是飛濺式(冷卻)是錯的。第1題EachoftheenginecylindersisprovidedwithaBosch,typePF,fuelpump.Thefuelpumpiclearanceinsidethebarrelisonly0.002-0.003mRegulationoftheamountoffueldeliveredbythefuelpumpisachievedbyturningthepumpplunger,thetheupperendofwhichisshapedesignedasatoothed'rackthatengageswiththetoothedrimpossibletoturnthepumpplungerduringengineoperation.A.isofPFtypeB.isofreciprocatingtypeC.hasaninlet注：燃油泵是PF型，往復(fù)式。C.canberenewedindividuallywhenworn注：柱塞在套筒中的間隙是微小的。注：出口閥是彈簧加力的，柱塞的下行沖程有彈簧實現(xiàn)。C.theeffectivestrokeofthepumpwillbe注：可以推斷出，當(dāng)移動齒條時，泵的有效行程會改變。Passage13(原題庫第30篇)Governingprimemovers,particularlydieselengines,requirewouldsoondowngradeeventhebestofgovernors.Cslappingofthebeltorchainprodtheendofthecamshaftissubjecttotorsionalvibrations,andgovernorsshouallcases,thegovernorshouldbematchedtotheenginerequirementsintermsofdroop,loadetc.Onlargeenginesthereisaninertialresistancetoaccelerationwithinthemassesofreciacceleration,atappingfromthescavengespacemaybetakenandthepressur注：這篇文章主要是關(guān)于安裝調(diào)速器以及對調(diào)速器的掃氣壓力控制。注：到調(diào)速器的驅(qū)動(裝置)應(yīng)該使用減震器。注：調(diào)速器安裝應(yīng)靠近燃油泵用于限制慣性效應(yīng)。注：可以推斷出掃氣壓力控制下，燃燒更完全。Passage14(原題庫第31篇)"Stop"position,allotherpipesarewithoutpressure. areopenedinthecometsequencexduringthestf第4題Whentheenginecrankshafthasreachedthenecessaryspeed,thehandwheelisturnedfurtherpastthefurthertowardsthemaximumposition.ThegovernorincreasesthefuelpumpC.governor2.Iftheshut-offvalveofthestartingairreceiverisopenedC.thestartingaircontrolvalveisactuated3.Ifthehandwheelispositioned"start'B.individualstartingvD.Alloftheabovearetrue.(空氣)氣動閥被打開。以上答案都是正確的。C.thecontrolpistoninthemainstartvaPassage15(原題庫第32篇)第2題Thegovernordriveisplacedonthestemendoftheengineandconsistsofacylindricalgearwheelwhichcontroltheeffectivestrokeofthefuelpuareconnectedbyaspring,therebyenablingthegovernortocontrolthepumpsevenifonisactivatedwhentheengengine.TheWoodwardgovernortriestomaintaintheregulatingshaftherebythetoothedrackoftherelevantfuelpumpismovedtothezeroposition.A.workingofthegove注：這篇文章主要是關(guān)于發(fā)動機油尺調(diào)節(jié)的。A.isdrivendirectlybythecrC.isinthemiddlepartD.Noneoftheaboveist注：調(diào)速器不是直接由曲軸驅(qū)動，也不是通過凸輪軸由鏈條驅(qū)動，也不在中間部分。3.IfafuelpumppistonseizesA.thestopcylinderwillbeactivatedC.therelevantspringwillbecompressedD.theflexiblejointwillbe注：假如燃油泵柱塞卡住，相關(guān)的彈簧將被壓縮。C.thetoothedrackoftherelevantfuelpumpshouldbemovedtozeropositionD.Noneoftheaboveistrue.注：測量汽缸中壓縮壓力時，相關(guān)燃油泵的齒圈應(yīng)被移到零位。Passage16(原題庫第33篇)Whereroutinemaintenanceisconcerned,thegovernorshouldbecheckedthatitmaystickatthatpoint.Torestrictthisproblemasfaraspossible第4題ToovercometheabovelimitationsoftheCFgovernor,"servogovernors"havebeendeveloped.Theseusethepowerofhydraulicstopumptheheavierfuelracksystemsassociatedwithlargerenginesintothsystemofpistons/plungerswhifsensitivityofthesmallCA.Thegovernorisnotsensitivenormally.B.Itisbecauseofwearinnormalworkingrange.C.Thechangeofspeedistoosmall注：討論的調(diào)速器卡住的原因是：由于在正常工作范圍中有磨損。A.theflyweightswouldfracturetooB.thespeedwouldbegreatlyincreasedC.theoperatorwouldsetthevalueD.thefuelwouldbecutoffA.willexceedthepredeterminedupperlimitB.willexceedthepredetermiC.willinvariablystuckD.Noneoftheaboveistrue.A.hydraulicpowerC.advancedgovernorsinsteadofPassage17(原題庫第34篇)第2題(A)typicalexampleofahydraulicgovernoristheWoodward.Thishasadjustabledroopforparallel第3題(A)gearpumpdrivenfromtheenginesuppliesoilunderpressuretoaccumulatorpistonsunderwhichisaby-passtoregulatemaximumpressure.Oneoperatedbythelinkagefromtheflyweightsabove.centerofrotationandlowerthepositionofthepilotvalveplunger,admittingoilpressurefromthebottomofthethecut-offpointinthefuelpumpB.whythespeedoftheengineflC.howthegovernorworksD.howthefuelpumpsworkA.Itisakindofmechanicalgovernor.B.ItcannotC.Ithasspeeddroop.D.Itmayonlybemanuallycontrolledfromaswitchboard.A.besuppliedtotheaccumulatorB.actonthepowC.besuppliedtothepilotvapowerpiston動力活塞：pilotvalve導(dǎo)閥；導(dǎo)向閥A.TheflyweightsmovetowardstheirD.TheterminalshaftmovestoaPassage18(原題庫第35篇)Thecylinderlinerisofalloycastiron,itsupperaccommodatemostofthecombfited.第2題InthisparticularmodelaproThecrankshaftmaybeeithersemi-builtuporofweldedconstruction,beatingsareofwhitemetal.Mainbehavethin-wallshells.Whitemetalisusedforthrotatedbyvanes.Thevalvespindlesareusuallymanufacturedbythehotisost2.InordertopreventhightemperaturecorroA.Madeofchrome-molybdenumalloysteelC.Inconelwelded注：為防止活塞頭高溫腐蝕，要采取(鉻鎳鐵)合金焊接的特殊措施。3.Whichoneisnotbolt-connA.ThepistoncrownandthepistonskirtB.ThepiC.Thepistoncrown4.TheexhaustvalvesarPassage19(原題庫第36篇)第1題Inaclosedfreshwatersystem,theenginejackets,theheatexchangerandthecirculatingpumpsformapumpedaroundthecylinderjackets,cylinderheads,exhaustvalvesandturbo-blowers.第2題However,provision第3題Theheadtankisgenerallyconnectedintothesystematthepumpsuction,asthisminimizesthechanceofairbeingdrawintothesysmaintainingpressureoffreshwaterintheheatexchangeraboforaminimumpressuretobemaintainedwithinthejacketstoavoidcaviventsifsteampocketsorairlocksarenottocausetoublfsmall-boretubeareleadfromanylocathecoolingwater.Aheaterinthecircuitfacilitateswarmingoftheenginepriortostarti第4題Thetemperatureofthewaterenteringtheenginejacketsisregulatedbymeansofaby-passacrossthejacketwatercooler.TheproportionsofwaterpassingthroughthoftheloadorspeedorthetemperatureoftheseawlimitanycontaminationfrompistoncoA.engine→heatexchanger→circulatinB.heatexchanger→engine→circulatingpumpD.circulatingpump→engine→heatexchanger→circulatingpump注：缸套冷卻水的回路是：發(fā)動機—熱交換器—循環(huán)泵—發(fā)動機。A.waterexpansionB.watermake-upC.warmingoftheengine注：閉式缸套冷卻水系統(tǒng)中，型高置水柜提供用于：水膨脹；水補償。A.engineinletB.pumpsinletC4.Thejacketwatertemperatur注：缸套水溫度被調(diào)節(jié)是為了維持發(fā)動機出口溫度恒定。Passage20(原題庫第38篇)throughaheaterandnextthroughacentrifugeforpurification.第1題Itmaythenpassthroughacooler,beforebeing4題(A)Onetankisinuse,whiletheotherisbeingfiled.第3題Thesetanksareheatedtoamoderatetemperaturepumpsshouldbein第4題(D)Adieselfueltankisincludedinthesystemwithitsdischargetotheprimarypumpsuctionsthroughaoilpassesthroughacentrifugeforpurificatio注：重油到柴油的轉(zhuǎn)換應(yīng)逐步地進行。Stepbystep(逐步地)等同于gradualA.HOtanksB.HeavyoilservicetanksC.Balancingtan注：自閉式放殘閥被安裝在重油日用柜上。A.Twoheavyoilservicetan注：兩臺泵被安裝，從在使用的日用柜中抽油。Passage21(原題庫第39篇)brakehorsepower(bhp)thesloweritturns.】第1題Theselargeslowrunningenginesareusedinthelargermerchantships,particularlyintankersandbulkcariersthereforetheyareconnectedtothepropellerbygearing.ThistC.Becausetheycanbeconnecteddirectlytothepropellerwithoutgearing.注：較大型的商船使用低速柴油機的原因：因為它們是省油的。C.PropellersizeD.Propellerrevolutions注：依據(jù)作者的觀點，低速柴油機螺旋槳的效率取決于：螺旋槳尺寸和轉(zhuǎn)速。注：中速柴油機有傳動裝置的原因：考慮到螺旋槳效率。4.Whatisprobablythemainreasonwhymedium-speeddPassage22(原題庫第40篇)第1題InonetypeoflargeboreMCengineswithhighcylindernumbers,wehaveexperiencedlongitudinalvibrationsofexhaustwhich,atcertainenginespeeds,coincidedwiththenaturalfrequencyofthemechanical第3題Theproblemsweresolvedbyredesigningthereceiveranditssupports,soastochangethenaturalfrequency.第4題Thefixedsupportfortheexhaustreceiverwasmodifiedfromoursinglespringplatetypetoadoublespringplatetype.Thedoublespringplatetypereducestherigidity,alsothenaturalB.isanewtypeofdieselenginedesignedonthebasisofMANandB&WengineA.thenaturalfrequencyofthefixedsupportB.thedifferentenC.thegaspulsatingA.keepthefrequencydownB.convertthenaturalfrequencyC.reducethemechanicalvibrationD.exhaustmuchgas4.ThefixedsupportofthereceiverofdoublespringplateA.modifiedfromthatofthereceiverofB.toreducethelocaldeformationofthereceiverC.toproducelessnaturalfrequencyofthesupport部變形。第3題Thesourceoftheaircanbefromthemainairreservoirsafterreducingtheairpressuretothe7or8barpressurerequiredbythesystem.第4題InthiscaseitislikelythatthedewpointoftheairwillbesuchthatanA.aninstrumentconsistingofairB.hu注："instrumentair"(儀表氣源)可能意思是控制空氣。注：第二段第一句告訴我們儀表氣源的壓力是7巴或8巴。C.Whendewpointoftheairbecomeshigher.D.WhenthedewpointoPassage24(原題庫第42篇)第4題Sufficientpotablewatermaybetakenoninporttomeetcrewandpassengerrequirementsbutthequalityofthiswaterwillbetoopoorforuseinwatnlyaminimalsupplyofpotablewaterandmakeuptherefseawater.Eveninvesselsthatsuchships,whenocean-going,shouldcarrydistillatThemainobjectofdistilationistoproducewateressentiallyfreeofsalts.PotablewaC.thefeedwaterforboilersD.drinkingwat3.Suspendedsolidsoftheboilerfeedwillbe4.Whichofthefollowingstatementsisnottrue?D.Apartialdrinkwatercanbemadeupbydistillationofseawater.Passage25(原題庫第43篇)第1題(B)ybringingthewatertoitsboilingpointanddrawingoffthevapourthesaltsandothersolidsareleftTheequipmentinwhichthisprocesstakesplaceisknownasanevapaboilingevaporator.第3題Theothertypeheatsthewaterinonecompartmentbeforeitisreleasedintoasecondcompartmentin第4題whichthepressureissubstantiallylower,causingsomeofthewaterto"flash"intoavapour.注：第一段第2行，單詞"which"意思是liquid,液體。A.essentialconstantB.dramaticallyvariousC.subs注：在沸騰式造水機中，蒸發(fā)壓力基本是恒定的。A.essentiallyconstantB.dramaticallyvariousC.substantiallylower注：閃發(fā)式造水機中蒸發(fā)壓力相當(dāng)?shù)汀?.Theword"which"inline4inp注：在第二段第4行中單詞"which"的意思是thesecondcompartment,第2級。Passage26(原題庫第44篇)注：這篇文章主要思想描述的是造水機。A.directsthevapourflowB.preventsthedropletsthrough注：曲徑或屏障的作用：防止液滴經(jīng)過。A.thefeedpassesaroundthetubesC.thefeedflowsbeneaththehotwaterD.thevertic注：我們可以推斷出：熱水在管子周圍通過。注：(從第1句推斷出)沒有提到的加熱介質(zhì)是廢氣。A.theprimaryairB.thesecondaryairC.vacuumpressureD.abso注：制造造水機的管殼，沒有被提到的材料是：鋁黃銅。Passage28(原題庫第46篇)acrossthejournalatpositionsone-thirdandtwo-thirdsalongitslength.第2題Thecapandshellarereplacedandtightenedupuntilthe"nip"iszero.第3題Thecapandshellarethenremovedandthethicknessoftheleadwirebearingsandapproximately0.25to0.4mmforcopper-leadortin-aluminuA.longitudinallyB.verticallyC.transverselyD.angularity注：鉛絲應(yīng)被橫向放在軸頸的上表面。注：在過盈間隙為零之前，軸承蓋和軸瓦要被更換并上緊。3.AccordingtoPassage,thethicknessoftheleadwireshouldbemeasured注：根據(jù)文章來看，鉛絲的厚度應(yīng)在軸承蓋和軸瓦第二次被拆除之后測量。注：根據(jù)文章來看，白合金軸承的間隙應(yīng)是在大約0.1毫米到0.2毫米的范圍內(nèi)。Allbearingsofthedrivinggear,thethrustbearing,thecamshaftbefloweasily.第2題Oilisdrawnfromasump,usuallylocatedonthebedplateoftheengine,byanelectrically-drivenA.inthebearings注：根據(jù)文章來看，油膜依靠壓力油系統(tǒng)維持。C.asthepressureinthe注：一種特殊的壓力潤滑(系統(tǒng))被提供用于十字頭軸承，用于驅(qū)動機構(gòu)中壓力向下作用時。4.Theword"feeding"inthelaA.eatingB.supplPassage30(原題庫第48篇)temperature,pressure,position,etc.第1、2題Theopen-loopsystemisthesimplestformacontrolsystemmaymonitoringfunctionmayservea