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單項選擇題

As its temperature rises, the volume of fuel oil in the tanks will （）.

A.remain the same
B.increase
C.decrease
D.none of the above

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單項選擇題

Which of the listed extinguishing agents is NOT suitable for fighting a liquid paint fire?（）

A.Dry chemical
B.Foam
C.Water
D.Carbon dioxide

單項選擇題

In the fire main system, quick cleaning strainers are located at the（）.

A.pump suctions
B.pump discharge
C.fire hydrants
D.hose nozzle