Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（） -题库考试答案搜索网

Which is the proper method of determining whether a portable CO₂ fire extinguisher needs recharging?（）

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2022-05-20 22:45

A、Check the tag to see when the extinguisher was last charged
B、Release a small amount of CO
C、Weigh the extinguisher and compare the weight against that stamped on the valve
D、Recharge the extinguisher at least once each year

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正确答案

C

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