單項選擇題

Which of the following faults would allow lube oil to enter the cooling system of a diesel engine?（）

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

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單項選擇題

Problems with the diesel engine fuel injection pump are usually caused by（）

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

單項選擇題

Diesel engine cylinder head test cocks are used to（）

A.check cylinder lubrication prior to starting engine
B.connect exhaust gas analyzers to determine engine efficiency
C.pressure test cylinder heads to check for leaks
D.remove moisture accumulations from cylinder prior to starting