单项选择题

Lube oil in the fresh water cooling system of a diesel engine may result from a （）

A.camshaft seizure
B.lube oil pump failure
C.lube oil cooler failure
D.lube oil pump overflow

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单项选择题

A.Improper lubrication
B.Air in the fuel system
C.Coated fuel lines
D.Excessive vibration

单项选择题

A.Excessive valve train lubrication
B.Leaking standby oil cooler core
C.Excessive lube oil pressure
D.Excessive lube oil in the system

单项选择题

A.improper adjustment
B.contaminated fuel
C.kinked fuel lines
D.excessive engine vibration