问题
单项选择题
Which extinguishing agent will cool down a heated bulkhead in the least amount of time?（）
A.Water stream
B.Water fog or apray
C.Steam
D.Dry chemical
答案
参考答案：B
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Which extinguishing agent will cool down a heated bulkhead in the least amount of time?（）
A.Water stream
B.Water fog or apray
C.Steam
D.Dry chemical
参考答案：B