单选题After extinguishing a fire with CO2，it is advisable to（）.Ause all CO2 available to cool the surrounding areaBstand by with water or other agentsCthoroughly ventilate the space of CO2Djettison all burning materials
单选题
After extinguishing a fire with CO2，it is advisable to（）.
A
use all CO2 available to cool the surrounding area
B
stand by with water or other agents
C
thoroughly ventilate the space of CO2
D
jettison all burning materials
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