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單項(xiàng)選擇題

Air in the fuel can cause（）

A.high lube oil temperature
B.blue smoke
C.the engine to stop
D.piston seizure

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單項(xiàng)選擇題

Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）

A.Take all exhaust temperature reading
B.Check the sump oil level
C.Verify proper lube oil pressure
D.All of the above

單項(xiàng)選擇題

Which of the following conditions would cause carbon deposits to form in the piston ring belt of a diesel engine?（）

A.faulty combustion
B.excessive ring temperature
C.over lubrication
D.all of the above

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