單項(xiàng)選擇題

In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.

A.secure all sources of fresh air to the tank
B.begin transferring the fuel to other tanks
C.top off the tank to force out all vapors
D.station someone at the fixed CO₂release controls

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單項(xiàng)選擇題

Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?（）

A.The mixture is too lean to burn
B.The mixture is too rich to burn
C.The vapor is about to explode
D.Conditions are perfect for combustion

單項(xiàng)選擇題

The volatility of a liquid is the tendency of a liquid to （）.

A.ignite
B.explode
C.asphyxiate
D.vaporize

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In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.

你可能感興趣的試題

Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?（）

The volatility of a liquid is the tendency of a liquid to （）.