问题
单项选择题
Which extinguishing agent is the best for use on electrical fires?()
A.Foam
B.CO2
C.Dry chemical
D.Water fog
答案
参考答案:B
Which extinguishing agent is the best for use on electrical fires?()
A.Foam
B.CO2
C.Dry chemical
D.Water fog
参考答案:B