单项选择题
Low compression pressure in a diesel engine is caused by（）
A.low water in the expansion tank
B.improperly seated valves
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings
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相关考题
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单项选择题
A pyrometer is an instrument used to measure the temperature of the diesel engine（）
A.exhaust
B.fuel oil
C.cooling water
D.cylinder liner -
单项选择题
Low compression pressure in a diesel engine can be caused by（）
A.improperly seating intake valves
B.leaking cylinder liner seal rings
C.late fuel injection timing
D.carbon deposits on the piston -
单项选择题
During the power stroke of a four-stroke/cycle diesel engine, most of the side thrust of a trunk-type piston is absorbed by the（）
A.piston skirt
B.pinion
C.crosshead
D.compression rings
