One of function of diesel engine lubricating oil is to （）

A . seal the space between the piston and liner B . transmit heat from the piston to the cylinder liner C . reduce the amount of combustion gas blow-by D . all of the above

A . alerting B . on-scene communication C . safety information D . general communicatio

A . stiffen the bedplate in way of the main bearings to increase the engines longitudinal strength B . accept most of the tensile loading that results from the firing forces developed during operation C . mount the engine frame securely to the hull to prevent shaft coupling misalignment D . connect the crosshead solidly to the piston rod

A . 正确 B . 错误

A . low compression temperature B . low ambient air pressure C . high lube oil pump pressure D . high fuel oil booster pump pressure

A . casting interlocking components B . welding plates to form sections for assembly C . forging integral components D . case hardening integral component

A . help keep the deck dry B . prevent stress concentrations on the stringer plate C . protect against twisting forces exerted on the frame of the vessel D . reinforce the side stringer

A . when replacing an SVC node due to a failure B . when migrating from a Windows OS to a Linux OS C . when replacing older storage with newer storage D . when performing a firmware upgrade on the SVC console

A . crankshaft B . piston C . connecting rod D . bearing

A . reduce lube oil temperature B . raise exhaust temperature reduce C . excessive heating of engine room D . reduce load on cooling water pum

A . Decrease the air density B . Increase the exhaust temperature C . Decrease the lube oil temperature D . Increase the air density

A . a leaking fuel injection nozzle B . a clogged air filter C . early fuel injection D . burned valve

A . refreshing the air B . making person upset C . adjusting the air humidity D . adjusting the air temperature

A . a leaking fuel injector nozzle B . a clogged air filter C . excessively early fuel injection D . malfunctioning valve

A . Control the amount of lube oil burned in the combustion chamber B . Transmit heat from the piston to the cylinder liner C . Prevent damage to ring groove inserts by acting as a heat dam D . Dissipate combustion chamber gas pressure by channeling it through the ring ga

A . feel the high pressure fuel line B . check the cylinder exhausts for white smoke frequently C . check the cylinder exhaust temperature D . isolate each cylinder and inspect the injector

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 liner

A . increase the density of the intake air B . decrease turbocharger power usage C . reduce exhaust gas temperature D . compensate for turbocharger PRM fluctuatio

A . @Responses       B . @AllChildren     C . @AllResponses   D . @AllDescendants&e

In four-stroke diesel engine, the cycle of events is completed in () of crankshaft. A.one revolution B.two revolutions C.four revolutions

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