A.residual carbon deposits
B.lube oil viscosity breakdown
C.uneven heat expansion of the rings
D.uneven heat expansion of the piston
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A.one-half engine speed
B.the same as engine speed
C.twice engine speed
D.four times engine speed
A.air intake
B.a fuel outlet
C.cooling water inlets
D.exhausting combustion gas
A.poor cooling of cylinder walls
B.improper cooling of the piston
C.insufficient piston lubrication
D.all of the above
A.natural aspiration
B.masked intake valves
C.air cells
D.scavenging air
A.excessive lube oil consumption
B.lower than normal lube oil temperature
C.higher than normal exhaust back pressure
D.excessive crankshaft end play
最新試題
The cetane rating of diesel fuel is an indication of the （）
The shipboard oil pollution emergency plan will be invalid after （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The condensers located in various stages of a flash evaporator are cooled by（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Cold weather starting of a diesel engine may be made easier by（）
If separating effect is not good, which measure should be taken （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）