單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

To determine if a CO₂ fire extinguisher is fully charged，you would（）.

A.Operate the trigger valve
B.Weigh the extinguisher
C.Test with a pressure gauge
D.Read the date of last test