轮机英语关联题题库最新整理91篇带翻译1.docx

轮机英语关联题题库最新整理91篇带翻译1.docx

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轮机英语关联题题库最新整理91篇带翻译1

20规则海事公开题库关联题大全

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.Ifanythingissu