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單項選擇題

If water is found in the crankcase of a diesel engine, the cause may be due to（）

A.a cracked cylinder head
B.a leaky cylinder head gasket
C.a cracked cylinder liner
D.any of the above

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單項選擇題

Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）

A.Ensure proper cylinder lube oil flow
B.Open all air space drain cocks
C.Open all indicator valves
D.all of the above

單項選擇題

Fuel oil is regularly transferred to the day tank in order to （）

A.allow impurities to settle out of the fuel
B.allow air to escape from the fuel
C.make fuel available for immediate use
D.all of the above