单选题Fires in escaping flammable gas are quickly brought under control by（）Astopping the flow of gasBreducing the chemical chain reactionCincreasing the oxygen supplyDcooling below the autoignition point
单选题
Fires in escaping flammable gas are quickly brought under control by（）
A
stopping the flow of gas
B
reducing the chemical chain reaction
C
increasing the oxygen supply
D
cooling below the autoignition point
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