單項(xiàng)選擇題When possible，what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?（）

A.Blanket the cargo spill with foam
B.Prevent the spread of fire with a foam dam
C.Apply CO2 on burning fuel at its source
D.Shut off the transfer of cargo


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1.單項(xiàng)選擇題When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）

A.Secure all engine room doors，hatches，and vents
B.Close the fuel line valve
C.Check the spread of the fire with foam
D.Cast the barge off the wharf

2.單項(xiàng)選擇題When must a dry chemical fire extinguisher be recharged?（）

A.After each use
B.When the air temperature exceeds 90°F
C.Every 6 months
D.Every 12 months

3.單項(xiàng)選擇題When loading or discharging dry mud or cement，crew members should use facial respirator masks and（）.

A.goggles
B.ear plugs
C.soft-soled boots
D.fireman's outfit

4.單項(xiàng)選擇題When joining the female coupling of the fire hose to the male outlet of the hydrant，you should make sure that the（）.

A.threads are lubricated
B.nozzle is attached to the hose
C.female coupling has a gasket
D.hose is led out

5.單項(xiàng)選擇題When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required?（）

A.The supervisor in charge of the dock to which the barge is tied up
B.Part 38 of the Rules and Regulations for Tankers
C.The Certificate of Inspection of the barge
D.The local fire marshal