單項(xiàng)選擇題

Fuel oil tank vents are fitted with a screen which will stop（）.

A.oil from flowing out of the tank vent
B.air from entering the tank vent
C.vapors from leaving the tank vent
D.flames on deck from entering the tank vent

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單項(xiàng)選擇題

Functions aboard a tanker or tank barge such as connecting, disconnecting, and topping off must be supervised by（）.

A.any certificated tankerman
B.the master of the vessel
C.the officer of the watch
D.the person designated as person in charge

單項(xiàng)選擇題

Gasoline tanks should be filled（）.

A.to the top to expel all vapors from the tanks
B.to the top so the operator is certain how much fuel he has aboard
C.with only sufficient fuel for the planned trip so excess gasoline is not carried
D.to near the top with some space allowed for gasoline expansion