輪機(jī)長(zhǎng)用最新輪機(jī)英語(yǔ)4647題庫(kù)..

1、編號(hào)問(wèn)題選擇A選擇B選擇C選擇D答案注解1“Onalargedieselengineinstallationcrankshaftaxialalignmentismaintainedbythe________.“pistonrodguidesenginethrustbearingcrossheadbearingmainshaftflexiblecouplingB在大型柴油機(jī)安裝中，曲軸靠推力軸承保持軸向?qū)χ小?“Adieselengine

2、whichisratedfnmaloperationatacrankshaftspeedof800rpmiscommonlyclassedasa________.“slowspeeddieselmediumspeeddieselhighspeeddieselconstantspeeddieselB曲軸轉(zhuǎn)速800轉(zhuǎn)／分以額定功率正常運(yùn)行的柴油機(jī)稱為中速柴油機(jī)。3Whichofthefollowingstatementsiscrectcon

3、cerningavailableasternpowerfdieselmainpropulsionsystemsAsternpoweristobeprovidedinasufficientamounttosecurepropercontroloftheshipinallnmalcircumstances.Theasternpowerofthemainpropellingmachineryistoprovidefcontinuousoper

4、ationasternat60%oftheaheadrpmatratedspeed.“Fmainpropulsionsystemswithoutreversinggearscontrollablepitchpropellerselectricpropulsiondriverunningasternisnottoleadtooverloadconditions.““Asternpoweravailablewillbeequaltoahea

5、dpowerwhencontrollablepitchpropellersareutilizedthusdiscountingtheneedfincreasedoperatingparameters.“A倒車功率必須能提供足夠的功率確保在各種正常情況下能夠?qū)Υ斑M(jìn)行適當(dāng)?shù)目刂啤?“Whentwomediumspeeddieselenginescoupledinparalleltoacommonpropellershaftthatoper

6、atesatthesamespeedastheengineswhichoftheoperatingconditionslistedwillapply“Fullhsepowerisavailableaheadastern.Oneenginemustberunningaheadtheotherastern.Fullreversingtqueisnotavailable.Mechanicalreductiongearingisrequired

7、.D當(dāng)兩臺(tái)中速柴油機(jī)并排連接到同速運(yùn)轉(zhuǎn)的普通螺旋槳軸上，需要機(jī)械減速裝。5WhichofthelisteddesignfeaturesismostcommontoatwostrokecyclelowspeedmainpropulsiondieselengineCrossheadconstruction.Crossscavengingairflow.Trunktypepistons.Singlereductiongearing.A低速二沖

8、程主推進(jìn)柴油機(jī)普遍采用十字頭結(jié)構(gòu)。6Adisadvantageofatwostrokecycledieselengineis________.mepowerstrokesperrevolutiontheuseofscavengeairmecomplicatedvalvegearhigherwkingtemperaturesofthepistoncylinderD二沖程柴油機(jī)的缺點(diǎn)是氣缸頭的溫度高。7“Incomparingengines

9、ofequalhsepowerhigherexhaustgastemperaturesoccurinaan________.“opposedpistonenginedoubleactingenginetwostrokecycleenginefourstrokecycleengineD與相同馬力的柴油機(jī)相比，四沖程柴油機(jī)的廢氣溫度高。8Thedoublebottominavesselisaspacecomprisedof________.

10、platingfmingtheengineroomtanktopdoubleplatinginstalledovertheflatkeelplateawatertightboundaryfmedbytheinnerbottomcompartmentsbetweentheinnerouterbottomsD船的雙底殼是由內(nèi)外兩層構(gòu)成的。9Awaterjacketisplacedaroundtheexhaustmanifoldsofprop

11、ulsiondieselenginesto________.reduceheatradiationtotheengineroomaidinpreventingturbogeroverheatingcondensedrainmoisturefromexhaustgasesdampenexhaustgaspulsationsinthemanifoldA環(huán)繞排氣總管的水套是為了減少對(duì)機(jī)艙的熱輻射。10“Whichofthelistedtype

12、sofstaringsystemsisoftenusedonlargelowspeeddirectreversingmainpropulsiondieselengines“Electric.Hydraulic.Air.Alloftheabove.CoftheaboveD發(fā)動(dòng)機(jī)發(fā)火之前必須獲得的最低轉(zhuǎn)速取決于發(fā)動(dòng)機(jī)的類型和尺寸、發(fā)動(dòng)機(jī)的狀態(tài)和環(huán)境溫度等因素。19“Inadieselengineinternalcombustioncause

13、sthepistontobemovedby________.“thesimpleadmissionoffuelairintothecombustionspaceonlythepressureofgasesdevelopedspeciallydesignedpartsconnectedtoashafttheconceptofreciprocityB在柴油機(jī)工作時(shí)，內(nèi)部燃燒引起活塞被燃?xì)鈮毫︱?qū)動(dòng)。20Dieselenginesareclas

14、sifiedasreciprocatinginternalcombustionenginesbecausethey________.useenergyfromfuelburnedoutsidetheircylindersburnfuelinacombustionchamberthatmovesbackfthburnfuelinachamberwhereitsenergymovesapistonbackfthuseacontinuousc

15、ombustionprocesstoimpartrotarymotiontothepistonsC把柴油機(jī)歸類于往復(fù)式內(nèi)燃機(jī)，是因?yàn)槿加驮谌紵覂?nèi)被燃燒，產(chǎn)生能量使活塞作往復(fù)運(yùn)動(dòng)。21Amainpropulsiondieselengineisnmallyshutdownby________.shuttingofftheairsupplyoverspeedingtheenginesecuringthefuelsupplysecuringt

16、heignitionsystemC主推進(jìn)柴油機(jī)是通過(guò)切斷燃油供應(yīng)實(shí)現(xiàn)停車的。22Thethermalenergyproducedbyaninternalcombustionengineistransfmedinto________.combustionenergyinternalenergyexternalenergymechanicalenergyD內(nèi)燃機(jī)產(chǎn)生的熱能轉(zhuǎn)換成機(jī)械能。23Maximumhsepowerofadieselen

17、gineisattained________.whentheengineRPMispulleddownbyoverloadatratedengineRPMat95%ofratedengineRPMat95%ofaproperlyadjustedgovernRPMwiththeengineunderfullloadB在額定轉(zhuǎn)速時(shí)所產(chǎn)生的功率是柴油機(jī)的最大功率。24“Asaheatengine________energyisthesourc

18、eofpowerbywhichthedieselenginecanbeoperated.“electricheatmechanicalexhaustB柴油機(jī)作為熱機(jī)，熱能是其功率的來(lái)源。25“Becausethecastingsofsmallerenginesarenotsobigheavy________cylinderblockmaybemadeinonepiece.“thecolumnthejacketcylindercoverc

19、ylinderlinerA由于小型發(fā)動(dòng)機(jī)的鑄件不是很重也不是很大，機(jī)架和氣缸體可以做成一體。26________systemisarrangedtoensurethatwatercanbedrawnfromanytanktheseadisgedtoanyothertanktheseaasrequiredtotrimthevessel.ThedomesticwaterBilgewaterOiltransferTheballastD壓載水系

20、統(tǒng)用來(lái)確保能從任一個(gè)艙或海中吸入海水，也能將水排到任一艙或海中，達(dá)到平衡船舶之目的。27“Ifyouvesselburns8tonsoffuelperhourat15knotshowmanytonsperhourwillitburnat18knots“13.82tons15.61tons16.00tons16.37tonsA船舶以15節(jié)的速度航行時(shí)耗油8噸，那么以18節(jié)的速度航行時(shí)的耗油量為：M2=（V2V1）3M1=（1815）38=

21、13.82（噸）。28Eachcylinderlineronthemarinemediumspeedengines________.isusuallycooledbyseawatercanbereplacedwhenwnoutisindirectcontactwiththewaterinthebeofthecylindercantexpwhenheatedB船用柴油機(jī)的缸套磨損后可以更換。29Energylossesdueto_____

22、___occurineverymachine.speedfrictionimpactatmosphereB由于磨擦造成的能量損失在每一臺(tái)機(jī)器都存在。30“HitachiB&W2strokecyclesingleactingdirectreversiblecrossheadweldingdesigntypedieselenginewithturbogetheseinfmationrefersto________.“thetypeofapu