单选题One advantage of dry cylinder liners used in a diesel engine is the()Alower thermal expansion rates than wet linersBgreater heat transfer rate than wet linersCgreater wear resistance than wet linersDprocedure to replace dry liners is simpler than for wet liners

单选题
One advantage of dry cylinder liners used in a diesel engine is the()
A

lower thermal expansion rates than wet liners

B

greater heat transfer rate than wet liners

C

greater wear resistance than wet liners

D

procedure to replace dry liners is simpler than for wet liners


参考解析

解析: 暂无解析

相关考题:

Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by______.A.using fuel oil with low cetane numberB.a badly worn piston pinC.a loose flywheel keyD.a loose bed plate bolt

A Kort nozzle is a(n) ______.A.hollow tube surrounding the propeller used to improve thrustB.nozzle attached to a firefighting hoseC.intake valve on a diesel engineD.piston cylinder on a diesel engine

单选题Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?()AExcessive cylinder linerBwater in the fuel systemCCracked cylinder linerDLeaking lube oil cooler

单选题One advantage of dry cylinder liners used in a diesel engine is the()Alower thermal expansion rates than wet linersBgreater heat transfer rate than wet linersCgreater wear resistance than wet linersDprocedure to replace dry liners is simpler than for wet liners

单选题Which of the diesel engine cylinder liners listed has internal cooling water passages?()AInternally finned linerBExternally finned linerCWet linerDIntegral water-jacket liner

单选题One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the ()AcrankcaseBpistonCcylinder linerDcrank cheek

单选题A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to ()Afeel the high pressure fuel lineBcheck the cylinder exhausts for white smoke frequentlyCcheck the cylinder exhaust temperatureDisolate each cylinder and inspect the injector

单选题Why are some diesel engine cylinder liners plated on the wearing surface with porous chromium?()AThe chromium will not wear out the piston ringsBThe chromium strengthens the liners in the way of the scavenging air portsCChromium eliminates the need for oil scraper ringsDPores in the plating aid in maintaining the lube oil film

单选题Diesel engine cylinder head test cocks are used to()Acheck cylinder lubrication prior to starting engineBconnect exhaust gas analyzers to determine engine efficiencyCpressure test cylinder heads to check for leaksDremove moisture accumulations from cylinder prior to starting

单选题Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?()ALubrication to the defective cylinder should be increasedBCooling water temperature to the engine should be increasedCOnly the turbocharger speed should be reducedDEngine speed should be reduced

单选题A drop in compression pressure in one cylinder of a diesel engine can be caused by()Aa leaking fuel injection nozzleBa clogged air filterCearly fuel injectionDburned valves

单选题The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to ()Acheck the cylinder exhausts for black smokeBlisten for combustion knock in that cylinderCisolate each cylinder and inspect the injectorDcheck the cylinder exhaust temperature frequently

单选题One end of a cylinder for a medium or high-speed diesel engine is sealed by the piston and rings, the other end is sealed by the ()AcrankcaseBcylinder headCvalve coverDengine frame

单选题In the cylinder head of a two-stroke/cycle diesel engine, valves are used for()Aair intakeBa fuel outletCcooling water inletsDexhausting combustion gas

单选题The function of the piston compression rings used in a diesel engine is to ()Aseal the space between the piston and linerBtransmit heat from the piston to the cylinder linerCreduce the amount of combustion gas blow-byDall of the above

单选题Broken intake valve springs on one cylinder of a diesel engine can cause the engine to ()AOver speedBfire improperlyClose oil pressureDoverheatrapidly

单选题Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of ()Alow loading of that cylinderBfaulty combustion in that cylinderCsluggish piston ring actionDexcessive piston cooling

单选题Persistent knocking in one cylinder of a diesel engine could be caused by().Aa low load on that cylinderBsluggish piston ring actionCexcessive piston crown coolingDexcessive clearance of piston pin

单选题One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an ()Adecrease in ignition lagBincrease in fuel economyCreduction in lube oil viscosityDincrease in cylinder misfiring

单选题A diesel engine is warmed up and white vapor is in the exhaust,this could indicate ()Aexcessive cylinder lubricationBa lugging engineCa leaking cylinder linerDoverloading of one cylinder

单选题A faulty injection in one cylinder of an operating diesel engine can be located by ()Acutting out individual injectors and noting engine performanceBchecking lube oil temperatureCchecking cam positionDusing a timing light

单选题One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to ()Aincrease scavenge air pressureBreduce fuel booster pump pressureCadjust the fuel rackDretard fuel injector timing

单选题()uses one or two high pressure pumps for all the cylinders with one more standby, while()have a separate high-pressure pump for each cylinder.AA common rail engine;conventional enginesBA conventional engine;common rail enginesCA marine diesel engine;most other enginesDA two-stroke engine;four-stroke engines

单选题One of function of diesel engine lubricating oil is to ()Ainduce carbon formation on cylinder wallsBimprove fuel penetration in the combustion spaceCform a friction reducing film between mating surfacesDlubricate the fuel injection

单选题Piston compression rings used in a diesel engine function to ()Atransfer heat from the cylinder to the pistonBscrape oil from the sides of the pistonCseal the combustion space from the crankcasesDprevent any piston contact with the cylinder liner

单选题A Kort nozzle is a(n)().Ahollow tube surrounding the propeller used to improve thrustBnozzle attached to a firefighting hoseCintake valve on a diesel engineDpiston cylinder on a diesel engine

单选题Fresh water is used for the cooling of cylinder jackets and () of the marine diesel engine.Acylinder coversBlubricating spaceCcrossheadDexhaust manifold

单选题Diesel engine cylinder head test cocks are used to ()Acheck cylinder lubricationBconnect the pressure indicator pressureCtest cylinder headsDconnect the exhaust gas pyrometers