单选题Halon extinguishes a fire by（）.Abreaking the chain reactionBsmothering the fireCcooling the fireDcoating the fuel with a nonflammable surface
单选题
Halon extinguishes a fire by（）.
A
breaking the chain reaction
B
smothering the fire
C
cooling the fire
D
coating the fuel with a nonflammable surface
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