单项选择题
Traditionally，the signal for fire aboard ship is（）.
A.more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm
B.continuous sounding of the ship's whistle and the general alarm for at least 10 seconds
C.1 short blast on the whistle
D.alternating short and long blasts on the ship's whistle
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相关考题
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单项选择题
To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.
A.replace the gasket in the male coupling
B.reduce fire pump pressure
C.replace the gasket in the female coupling
D.rethread the male coupling -
单项选择题
To prevent the spread of fire by conduction you should（）.
A.cool the bulkheads around the fire
B.remove combustibles from direct exposure
C.close all openings to the area
D.shut off all electric power -
单项选择题
To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.
A.glycerine
B.graphite
C.kerosene
D.fresh water and soap
