The fire extinguishing action of CO2 comes mostly from （）. A:breaking the fire chemical chain reaction B:smothering C:cooling D:isolating the heat from the fuel

The fire extinguishing action of CO₂ comes mostly from （）.
A:breaking the fire chemical chain reaction
B:smothering
C:cooling
D:isolating the heat from the fuel

出自：海船船员证

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