A.corrosion on the gears
B.excessive gear speed
C.dirt in the oil
D.misalignment of the gears
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A.maintain alignment when the ship’s hull is working in heavy seas
B.ensure engine vibrations correspond to the natural frequency of the hull
C.permit the engine to expand away from the driven equipment as the engine heats up and expands
D.maintain engine thrust bearing clearances
A.must churn the oil in the sump
B.is connected to the propeller shaft
C.is driven at the highest RPM
D.compensates for alignment variations between the engine and pinion gear
A.reduce load
B.check your exhaust
C.adjust cooling water temperature
D.increase lube oil flow
A.Lubrication to the defective cylinder should be increased
B.Cooling water temperature to the engine should be increased
C.Only the turbocharger speed should be reduced
D.Engine speed should be reduced
A.incorrect injection timing
B.low exhaust back pressure
C.floating exhaust valves
D.excessive cranking speed
最新試題
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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