轮机英语新书新习题AAAWord格式.docx

轮机英语新书新习题AAAWord格式.docx

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LESSON8ReservingManoeuvre--------------------------------------------------------------------51

LESSON9TheGovernor------------------------------------------------------------------------------52

LESSON10ThePreparationforStand-by----------------------------------------------------------55

LESSON11OperatingtroublesandRemedies-----------------------------------------------------57

LESSON12MarineBoiler----------------------------------------------------------------------------81

LESSON13MarinePump-----------------------------------------------------------------------------88

LESSON14MarineRefrigeration--------------------------------------------------------------------95

LESSON15MarineAirConditioningSystem-----------------------------------------------------100

LESSON16OilWaterSeparators-------------------------------------------------------------------105

LESSON17FreshWaterGenerator-----------------------------------------------------------------113

LESSON18DeckMachinery------------------------------------------------------------------------116

LESSON19AirCompressor-------------------------------------------------------------------------120

LESSON20AlternatingCurrentGenerator--------------------------------------------------------122

LESSON21Switchboard-----------------------------------------------------------------------------130

LESSON22Watchkeeping---------------------------------------------------------------------------133

LESSON23FirePreventingandFire-fighting-----------------------------------------------------139

LESSON24Safety-------------------------------------------------------------------------------------144

LESSON25PSC---------------------------------------------------------------------------------------152

LESSON26STCW------------------------------------------------------------------------------------155

LESSON27MarineControl--------------------------------------------------------------------------157

LESSON28MarinePollution------------------------------------------------------------------------160

LESSON29SteeringGear----------------------------------------------------------------------------167

LESSON30ISM---------------------------------------------------------------------------------------171

LESSON31ISPS---------------------------------------------------------------------------------------173

LESSON32ShipRepair-------------------------------------------------------------------------------175

LESSON33Valve--------------------------------------------------------------------------------------181

LESSON34ShipNavigation-------------------------------------------------------------------------183

LESSON35Terms-------------------------------------------------------------------------------------186

LESSON36Grammar---------------------------------------------------------------------------------187

LESSON37Propeller----------------------------------------------------------------------------------193

Lesson1DieselengineConstruction

1._____canbefoundonmostmediumtolargemerchantvesselsevenifthemainengineiseitherasteamturbineor2-strokecrossheadengine.

A.Themediumspeed4-stroketrunkpistonengine

B.Thelowspeed2-strokecrossheadengine

C.Themediumspeed2-strokecrossheadengine

D.Thelowspeed4-stroketrunkpistonengine

2._____allowstheenginetobeplacedwhereverismostsuitable,astheynolongerhavetobealignedwithreductiongearingandshaftingasisthecasewithconventionalinstallations.

A.DieselenginepropulsionB.Dieselelectricpropulsion

C.SteamenginepropulsionD.Gasturbinepropulsion

3.Mediumspeedengineshavea_____powertoweightratiothantheslowspeedtwostrokes,butduetothehigherspeedstendtohave_____maintenanceintervals.

A.higher/reducedB.higher/increasedC.lower/reducedD.lower/increased

4.Thepurposeoftheskirtortrunkinfour-strokecycleenginesistoactinasimilarmannertoa_____.

A.crossheadB.crownC.pistonrodD.connectingrod

5.Thefour-strokecycleissocalledbecauseittakes_____tocompletetheprocessesneededtoconverttheenergyinthefuelintowork.

A.twostrokesofthepistonB.fourstrokesofthepiston

C.onerevolutionofthecrankshaftD.fourrevolutionsofthecrankshaft

6.Thebedplatemustberigidenoughtosupporttheweightoftherestoftheengine,andmaintainthecrankshaft,whichsitsinthebearinghousingsinthe______,inalignment.

A.longitudinalgirdersB.transversegirdersC.foregirdersD.aftgirders

7.Basicallythebedplateconsistsoftwo______,whichrunthelengthoftheengine.

8.TheA-framescarrythecrossheadguidesandsupporttheengine______.

A.foundationB.seatingC.entablatureD.bedplate

9.Topreventexcessive_____inthetransversegirders,thetieboltsarepositionedasclosetothecenterofthecrankshaftaspossible.

A.thermalstressesB.bendingmomentsC.thermalloadsD.surfacetensions

10.Becausethetieboltsaresoclosetothecrankshaft,someenginesemploy______toholdthecrankshaftmainbearingcapinpositioninsteadofconventionalstudsandnuts.

A.throughboltsB.jackboltsC.tapboltsD.fittedbolts

11.Thecrankpinsandjournalsweremachinedandmatchingholesboredinthewebs,whichwereslightly______indiameter.

A.smallerB.largerC.higherD.lower

12.Today,crankshaftsforlarge2-strokecrossheadenginesareofthe______type.

A.semi-builtB.built-upC.solidforgedD.individualforged

13.The______ofthesemi-builtmethodoftheconstructioncrankshaftisthatbymakingthetwowebsandcrankpinfromasingleforgingthegrainflowinthesteelfollowsthewebroundintothecrankpinandbackdowntheotherweb.

A.advantagesB.disadvantagesC.poweradvantagesD.powerdisadvantages

14.Theconnectingrobisfittedbetweenthecrossheadandthecrankshaft.Ittransmitsthefiringforce,andtogetherwiththecrankshaftconvertsthe_____motiontoa_____motion.

A.rotary/reciprocatingB.upanddown/foreandaft

C.foreandaft/upanddownD.upanddown/rotary

15.Theslippersrun______inthecrossheadguidesasthepistonandrodare______andpreventthetopoftheconnectingrodfrommovingsideways.

A.upanddown/reciprocatingB.upanddown/rotating

C.backandforth/reciprocatingD.backandforth/rotating

16.Becausethetopoftheconnectingrodswingsaboutthepinandchangesdirectioneachtimethepistonreachesmid-stroke,therelativespeedbetweenbearingandpinatmid-strokeiszero,______toamaximumasthepistonapproachestoporbottomdeadcenterandthen______backtozeroagainasthepistonapproachesmid-strokeandtheconnectingrodchangesdirection.

A.accelerates/deceleratesB.accelerates/accelerates

C.decelerates/deceleratesD.decelerates/accelerates

17.Theloadonthecrossheadpinisalways______,soitisthe______halfofthebearingwhichissubjecttowear.

A.upwards/topB.upwards/bottomC.downwards/topD.downwards/bottom

18.Becauseofthehighloadsthebearingmaterialisatin-aluminumalloybondedtoasteelshell.Thecrossheadpinishighlypolishedtoa______.

A.flatsurfaceB.mirrorfinishC.slopingsurfaceD.inclinedsurface

19.Becauseoftheresultinghigherpressuresinthecylinderfromthecombustionofthisgreatermassoffuel,andthelargerdiameters,thelinermustbemade_____atthetoptoaccommodatethehigherstresses,andpreventcrackingofthematerial.

A.thinnerB.thickerC.smootherD.rougher

20.Cylinderlinersfromolderlowerpoweredengineshadauniformwallthicknessandthecoolingwasachievedbycirculatingcoolingwaterthroughaspaceformedbetween_____.

A.crownandskirtB.linerandjacketC.ringandgrooveD.jacketandblock

21.Toomuchexcessairis______becausetheheatgeneratedisbeinglostthroughtheexhausttrunkinginsteadofbeingmadeusedofinheatingthewatertoproducesteam.

A.notgoodB.goodC.betterD.thebest

22.Gasturbinesdifferfromsteamturbinesinthat______.

A.steamratherthangasisusedtoturnashaft

B.vaporratherthangasisusedtoturnashaft

C.theformerusesgastoturnashaft

D.thelatterusesgastoturnashaft

23.Abuilt-upexhaustvalveisoneinwhich______.

A.thestemandheadsaremadeofdifferentmaterial

B.low-alloysteelisusedthroughout

C.areplaceablevalvediskisweldedtothehead

D.theself-centeringactioncomesfrommotionofthevalvestemintheguide

24.Precisionenginebearinginsertsaremanufacturedwithasmallportionofthebearingendsextendingbeyondthebearinghousingorcaps.Theinstallationprocessofthesebearingsrequiressufficient______.

A.overlapB.crushC.laporleadD.protrusion

25.Thelowersectionofapistoniscalledthe______.

A.landB.skirtC.crownD.plate