單項(xiàng)選擇題

Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.

A.only when fully loaded
B.if one or more tanks are full
C.when transferring cargo
D.only when the barge is being towed

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單項(xiàng)選擇題

Portable CO₂ fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.

A.the CO₂ being inhaled by personnel
B.reflash of burning liquids
C.vapor condensation on the extinguisher
D.the discharge causing a static spark

單項(xiàng)選擇題

Overhauling a fire in the living quarters on a vessel must include（）.

A.opening dead spaces to check for heat or fire
B.evacuation of the vessel
C.sounding the all clear signal
D.operation of the emergency generator