单项选择题
What condition will result in the automatic shutdown of a diesel engine? （）
A.High jacket water pressure
B.High lube oil pressure
C.Low lube oil pressure
D.Excessive turbo charger speed
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Vessels required to be equipped with an approved backfire flame arrester are（）.
A.those with diesel engines
B.all those with gasoline engines
C.those with large engines only
D.None of the above -
单项选择题
The ship has a diesel engine（）a supercharger.
A.with
B.of
C.on
D.over -
单项选择题
The pivot pin at the base of a sheath-screw boom davit must be（）.
A.inserted each time before the booms are cranked out
B.periodically removed for inspection and lubricated
C.replaced at each inspection for certification
D.in the locked position after the boat is cradled and griped down
