轮机英语关联题题库最新整理篇带翻译DOC.docx

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