单选题In a marine diesel engine the oil sump is （）.Ajust below the crankcaseBthe oil cup for the exhaust valveCthe pan for collecting drain fuel oilDoil circulating pump
单选题
In a marine diesel engine the oil sump is （）.
A
just below the crankcase
B
the oil cup for the exhaust valve
C
the pan for collecting drain fuel oil
D
oil circulating pump
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