单项选择题
A.Alcohol foam B.Dry chemical C.Chemical foam D.Water fog
Which extinguishing agent is NOT recommended in the Che...
单项选择题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
Which extinguishing agent is most effective on a mattre...
单项选择题Which extinguishing agent is most effective on a mattress fire?（）
A.CO2 B.Foam C.Dry Chemical D.Water
Which extinguishing agent is effective in combating an ...
单项选择题Which extinguishing agent is effective in combating an isoprene fire?（）
A.Dry chemicals B.CO2 C.Foam D.All the above
