單項(xiàng)選擇題

Which is a disadvantage of Halon as a fire extinguishing medium?（）

A.Conducts electricity
B.Difficult to store
C.Large volume necessary to be effective
D.Ineffective in powdered metal fires

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單項(xiàng)選擇題

Which firefighting method is an example of an indirect attack on a fire?（）.

A.Bouncing a straight stream of water off the overhead to create spray effect
B.Spraying foam on a bulkhead and letting it flow down and over a pool of burning oil
C.Flooding a paint locker with CO₂ and sealing the compartment
D.Cooling adjacent bulkheads with water to prevent the spread of the fire by conduction

單項(xiàng)選擇題

Which fire extinguishing agent has the greatest capacity for absorbing heat?（）

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