你可能感興趣的試題

Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.

A.authorized fire equipment servicing personnel only
B.replacing the propellent cartridge and refilling with powder
C.puncturing the cartridge seal after installation
D.recharging the cartridge and refilling it with powder

單項(xiàng)選擇題

Radiation spreads a fire by（）.

A.transferring heat across an unobstructed space
B.heated gases flowing through ventilation systems
C.burning liquids flowing into another space
D.transmitting the heat of a fire through the ship's metal

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