轮机英语关联题题库最新整理篇带翻译DOC.docx
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轮机英语关联题题库最新整理篇带翻译DOC.docx
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轮机英语关联题题库最新整理篇带翻译DOC
Passage1(原题库第1篇)
Valvedrivemechanism
Thevalvedrivemechanismcommandstheinletandexhaustvalvesattherequiredtiming.
第3题Thevalvedrivemechanismconsistsofaninletandexhaustcamfollower(8)eachsuspendedinaplungerofthetappetassembly(7),twotubularpushrods(4)withballjoints,twonodularcastironrockerarms
(2)suspendedinarockerarmbearingbracket,twoyokes(5)andayokeguidepins.SeeFig.4-1.
Thetappetrollersfollowthecamprofilesandtransferthemovementsthroughpushrodstotherockerarms.第4题Therockerarmsoperatetheinletandexhaustvalvesthroughyokes(5).
Lubricationfortherockerarmscomesfromtheengine'ssecondaryoilsupplymanifoldthrough
drillingsinthecylinderheadandrockerarmbracket.
第2题Thetappetassemblyreceiveslubricatingoilviachannelsintheengineblockfromthemainsupplymanifold.Fortherollerandshaft,theoilissuppliedthroughtheguidingplunger.
第4题Tocompensateforheatexpansionaclearancemustexistbetweentherockerarmandyoke.第1题Alladjustmentshavetobedoneonacoldengineonly.
1.AccordingtothePassage,thebesttimetoadjustthevalveclearanceis_____.
A.beforetheengineisstartedB.whentheengineisrunning
C.aftertheenginehasjustbeenstoppedD.whensomethinghasgonewrongwiththeengine
注:
根据文章来看,调节阀间隙的最好时间是在发动机启动之前。
2.Therollerandthetappetassemblyarelubricatedbymeansof_____.
A.themainlubesystemB.thesecondaryoilsystem
C.thespecialpumpingsystemD.theturbineoilsystem
注:
滚轮和挺杆组件借助于主润滑系统润滑。
3.AccordingtothePassage,thevalvedrivemechanismdoesnotinclude_____.
A.tappetrollersB.pushrodsC.nodularcastironD.yokesandguidepins
注:
根据文章来看,阀驱动机构不包括球墨铸铁。
(包括挺杆滚轮、顶杆、吊梁和导销)
4.Toclosevalvestightly,whichclearanceshouldbeinspectedaccordingtothemaintenanceschedule?
A.Theonebetweenthecamandthetappetroller.B.Theonebetweenthepushrodsandthebanjoints.
C.TheonebetweentherockerarmsandtheyokeD.Theonebetweentwotubularpushrods.
注:
依据保养清单,要紧密的关闭阀件,应检查摇臂和吊梁之间的间隙。
Passage2(原题库第3篇)
Chargeaircooler
Theengineisequippedwithachargeaircooler.Theinserttypechargeaircoolerismountedinaweldedcasing(airtrunk).Thetrunkisboltedtotheengineblock.
第1题Standardisatwo-stagecoolermounted.Thefirststage,throughwhichthechargeairflows,iscooledwithwaterfromtheHTcoolingsystemandcooksthechargeairtillapprox.90~100oC.ThesecondstageissuppliedwithwatercomingfromtheLTwatersystemandcooksthechargeairfurthertilltherequiredtemperatureofapprox.50oC.第2题(B)BycontrollingthewaterflowthroughtheLTcoolerthechargeairtemperaturecanbekeptconstantattherequiredtemperature.
Thecirculatingcoolantwatershouldalwaysbeunderpositivepressureandshouldbeascleanaspossible.Theoperatingairtemperatureshouldbemaintainedbycontrollingthecoolantinlettemperature.
Whilsttheengineisrunningtheairandcoolanttemperaturesandpressuresatinletandoutletshouldbecheckedandloggedperiodically.第3题Variationsfromnormalindicatefaultsdevelopingsuchasfoulingofthefilmplatesorobstructionofthewatertubes.
第4题Checkdaily,duringoperationoftheengine,theworkingofthetelltaleholeatthefreeendofthechargeairreceiver.Thefunctionofthisholeistoinformtheoperatorthepresenceofwaterinthechargeairreceiver.Undernormalconditiononlycompressedairshouldescapefromthishole.
1.AccordingtothePassage,theexpression"HT"probablymeans_____.
A.HIGHTANKB.HIGHTEMPERATUREC.HEATTRANSMISSIOND.HEATTRANSFER
注:
根据文章来看,"HT"的意思是:
hightemperature,高温。
2.Inordertomaintainthechangeairtemperatureweshouldcontrol_____.
A.thecoolantinlettemperaturecomingfromthefirststagecooler
B.thecoolantflowcomingfromthesecondstagecooler
C.thecoolantoutlettemperaturecomingfromthesecondstagecooler
D.thecoolantflowcomingfromtheflintstagecooler
注:
为维持增压空气的温度,我们应控制来自第二级冷却器的冷却剂流量。
3.Thechargeairtemperaturedepartingfromnormalmayindicatethat_____.
A.condensatecanbeformed
B.onlycompressedairshouldescapefromthetelltale
C.thefilmplatesarebecomingdirtyorthewatertubesareblockedbyscale
D.coolingwatermayhavebeencarriedintothecylinders
注:
增压空气温度偏离正常表明镀膜变脏或水管被水垢堵塞。
4.Thefunctionofthetelltaleholeisto_____.
A.detectwhethercompressedairhasescapedfromthehole
B.controlthecoolantinlettemperature
C.determinewhetherthecoolantwaterisunderpositivepressure
D.informtheoperatorthepresenceofwaterinthechargeairreceiver
注:
警报孔或监视孔的作用是同志作业员扫气箱中有水。
telltalehole监视孔,指示孔,警报孔;chargeairreceiver.扫气箱
Passage3(原题库第6篇)
第1题Atthefirststart,listencarefullyforpossiblejarringsounds.Ifanythingissuspected,stoptheengineimmediately,otherwisestoptheengineafter5minutes'idling.Checkatleastthetemperaturesofthemainandbigendbearingsandofallotherbearingswhichhavebeenopened.Makevisualinspectionfrombelowtothecylinderlinersandpistonskirtswhichhavebeenopened.Ifeverythingisinorder,restart.
第4题(A)Checkthatthereisnoleakageofgas,water,fuelorlubricatingoil.Especiallyobservethefuellines,HPfuelpumpsandinjectors.第4题(B)Watchthequantitiesemergingfromtheleakoilpipes!
Checkthatthestartingairmanifoldisnothotatanycylinder(leakystartingvalvemaycauseexplosion!
Afteroverhaul,thefollowinginstructionsareimportant:
-checkpressureandtemperaturegauges.
-checktheautomaticalarmandstopdevices.
-checkthepressuredropoverthefuelfilterandlubricatingoilfilter.第2题(C)
-checktheoillevelintheoilsump/oiltank.第2题(D)
Estimatetheconditionoftheoil.
-checkthede-aeratingoftheenginecirculatingwatersystem.第2题(A)
-checkthequantityoffuelleak.第4题(C)
-checkthetelltaleholesforleaks.
-checkthecirculatingwaterquality第2题(B)
-checkthecylinderpressures.
-listenforjarringsounds.
-checkthecrankcasepressure.
-checkthestartingairmanifold.
Running-inismainlyintendedtoletpistonrings"wear"tofitproperlyinthecylinderliner.
第3题(D)Donotcontinuouslyrunatconstantloadduringtherunning-inprocess(Fig.4-4).
Itisimportanttovarytheloadseveraltimes.Theringgroovesinthepistonwillhaveadifferenttiltingangleateachloadandconsequentlythepistonringhasadifferentcontactlinetothecylinderlinerwall.
1.Paragraph1tellsusthat_____.
A.Ifwehearvibrationsounds,weshouldstoptheenginequickly,orallowittooperateatlowspeedfor5minutes,thenstopitandcheckeverything
B.Ifwehearvibrationsounds,weshouldstoptheenginequickly,otherwisetheenginewillbestoppedautomaticallyafter5minutes
C.Ifwehearexplosionsoundsweshouldstoptheenginethencheckeverything
D.ifwehearsurgingsounds,weshouldstoptheengineimmediatelyotherwiseafter5minutestheenginewillbedestroyed
注:
从第一段可知,如果听到震动声,应快速停车,或让它低速运行5分钟,然后停车并检查所有部件。
2.Afteroverhaul,followinginstructionsareimportantexcept_____.
A.releaseairfromtheenginecirculatingwatersystem
B.treatthecirculatingwaterifnecessary
C.makesurethepressuredropisenoughbesidesthefuelfilter
D.makesurethequantityoflubeoilmeetstherequirement
注:
检修之后,确保除了燃油过滤器以外的压降足够大的指令不重要。
besides=inadditionto除了…以外,还…
3.Afterpistonoverhaul,therunning-inprocessshouldbecarriedout_____.
A.periodicallyatsteadyloadB.occasionallyatvariousload
C.continuallyatconstantloadD.continuallyatvariousload
注:
活塞检修之后,磨合过程应在各种负载状态下连续进行。
4.Whendealingwithenginetroubles,_____.
A.noleakageoflubricatingoilshouldbechecked.
B.quantitiesofoilemergingfromtheleakoilpipesmustbewatched
C.qualityoftheleakoilmustbewatched
D.thenumberoftheleakingfuellinesshouldbechecked
注:
处理发动机故障时,一定要观察在漏油管路中出现的油量。
Passage4(原题库第18篇)
第2题ThecoolingwaterintheHT(hightemperature)circuitcoolsthecylinderliners,cylinderheadsandturbocharger.Fromthepumpwaterissuppliedtotheenginemanifoldwhichiscastintheengineblock.Fromthemanifoldthewaterisdistributedtoallcylinderlinersectionsandfromeachlinerupwardsthroughthecoolingwaterchannelsinthelinercollars.Fromthelinercollarsfurtherintothecylinderheads.Inthecylinderheadthewaterisforcedbyanintermediatedecktoflowalongtheflameplate,aroundthevalvestotheexhaustvalveseatsandupalongthefuelinjectorsleeve.Fromthecylinderheadthewaterisdischargedviaaconnectionpieceintothedischargemanifold.
第3题ThereturnwaterfromthecylinderheadsandturbochargerissuppliedtotheHTaircooler.Inthefirststageofthiscooler,mostoftheheatfromthechargeairisextracted.
第1题TheLTcircuitwatercoolsthechargeairinthesecondstage.ThenecessarycoolingfortheLTwaterisgainedfromacentralcooler.BycontrollingtheLTwatertemperaturetotheinter-coolerthecorrectchargeairtemperaturecanbeobtained.
Forpreheatingpurposes,aheatercircuitwithapumpandheaterareconnectedintheHTcircuitbeforetheengine.第4题Beforestarting,theHTcircuitisheatedtillabout60oCbyaseparateheater.Thepreheatingoftheengineis,priorofstartingupandloadingonHFO,ofutmostimportance.
1.FromthePassageweknowthatthechargeairtemperaturewascontrolledby_____.
A.seawaterfromacentralcoolerB.freshwaterfromacentralcooler
C.freshwaterfromaHTcircuitD.freshwaterfromtheLTcircuit
注:
从文章来看,我们了解到增压空气温度由来自低温回路的淡水控制。
2.Thecoolingwatertocooltheenginewasforced_____.
A.intothecylinderblockandth
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