单项选择题

Engine coolant accumulating in the diesel engine lubricating oil can result from a （）

A.low oil pressure
B.high coolant pressure
C.leaking fuel injector
D.cracked cylinder head or liner

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单项选择题

A.speed limiting governor
B.variable speed governor
C.constant speed governor
D.load limiting governor

单项选择题

A.high cost of fuel
B.serious fire hazard
C.possibility of pollution
D.poor combustion which will occur in that cylinder

单项选择题

A.lube cooler failure
B.poor heat transfer
C.mechanical lubricator failure
D.camshaft seizure