单选题CO2 extinguishes a fire by （）.Aa blanket of bubbles formed on the surface of the fireBsmotheringCcoolingDisolating the heat from the fuel
单选题
CO2 extinguishes a fire by （）.
A
a blanket of bubbles formed on the surface of the fire
B
smothering
C
cooling
D
isolating the heat from the fuel
参考解析
解析：
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