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
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相关考题
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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 -
单项选择题
A pyrometer is an instrument commonly used to measure（）
A.cylinder pressure
B.flame intensity
C.exhaust gas temperature
D.crankshaft axial alignment -
单项选择题
Worn main bearings in a diesel engine can result in （）
A.decreased compression pressure
B.increased lube oil pressure
C.lower lube oil temperature
D.excessive leakage past the piston rings
