单项选择题
A.air intake B.a fuel outlet C.cooling water inlets D.exhausting combustion gas
Diesel engine piston seizure can be caused by （）A.poor ...
单项选择题Diesel engine piston seizure can be caused by （）
A.poor cooling of cylinder walls B.improper cooling of the piston C.insufficient piston lubrication D.all of the above
Exhaust gases are generally removed from the cylinders ...
单项选择题Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）
A.natural aspiration B.masked intake valves C.air cells D.scavenging air
Improperly fitted piston rings in a diesel engine can c...
单项选择题Improperly fitted piston rings in a diesel engine can cause（）
A.excessive lube oil consumption B.lower than normal lube oil temperature C.higher than normal exhaust back pressure D.excessive crankshaft end play
