單項選擇題

Which extinguishing agent is the best for use on electrical fires?（）

A.Foam
B.CO₂
C.Dry chemical
D.Water fog

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單項選擇題

Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）

A.Alcohol foam
B.Dry chemical
C.Chemical foam
D.Water fog

單項選擇題

Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?（）

A.Foam
B.Carbon dioxide
C.Dry chemical
D.Water fog