單項選擇題A fire in a ballast pumproom can be brought under control with minimal impact on stability by（）.

A.cooling the outside bulkheads with water
B.shutting all sources of air into the compartment
C.closing the sea chest
D.flooding the compartment with salt water


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1.單項選擇題A fire in the galley always poses the additional threat of（）.

A.contaminating food with extinguishing agent
B.shutting all sources of air into the compartment
C.closing the sea chest
D.a grease fire in the ventilation system

2.單項選擇題A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots.You should（）.

A.remain on course and hold speed
B.change course and put the stern to the wind
C.change course to put the wind on either beam and increase speed
D.remain on course but slack the speed

3.單項選擇題A fire of escaping liquefied flammable gas is best extinguished by（）.

A.cooling the gas below the ignition point
B.cutting off the supply of oxygen
C.stopping the flow of gas
D.interrupting the chain reaction

4.單項選擇題A fire starts on you vessel while refueling. You should first（）.

A.stop the ventilation
B.sound the general alarm
C.determine the source of the fire
D.attempt to extinguish the fire

5.單項選擇題A flame screen（）.

A.permit the passage of vapor but not of flame
B.prevents the passage of flammable vapors
C.prevents inert gas from leaving a tank
D.permits vapors to exit but not enter a tank