單項選擇題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


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1.單項選擇題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

2.單項選擇題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

3.單項選擇題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

4.單項選擇題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

5.單項選擇題When fire pumps are used for other than firefighting service，each pipe connecting the other service (except for branch lines used for deck washing) must have a（）.

A.check valve installed in the line
B.shut off valve at a manifold near the pump
C.quick disconnect union within ten feet of the pump
D.regulator in the line set at 125 psi