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單項(xiàng)選擇題

Fixed C0₂ systems would not be used on crew’s quarters or（）.

A.the paint locker
B.spaces open to the atmospere
C.cargo holds
D.the engine room

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單項(xiàng)選擇題

Foam extinguishes a fire by（）.

A.shutting off the air supply
B.cooling the fule to below ignition temperature
C.dispersing the fuel
D.removing the source of ignition

單項(xiàng)選擇題

Foam-type portable fire extinguishers are more usefull in combating fires involving（）.

A.solid materials such as wood or bales of fiber
B.inflammable liquids
C.electrical equipment
D.metallic solids

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