单项选择题
A.low water in the expansion tank B.improperly seated valves C.low fuel oil pressure D.worn or broken cylinder liner sealing rings
A pyrometer is an instrument used to measure the temper...
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
Low compression pressure in a diesel engine can be caus...
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
During the power stroke of a four-stroke/cycle diesel e...
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
