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单选题
Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?()
A
Check the tag to see when the extinguisher was last charged
B
Release a small amount of CO2; if the CO2 discharges,the extinguisher is acceptable
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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更多 “单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?()A Check the tag to see when the extinguisher was last chargedB Release a small amount of CO2; if the CO2 discharges,the extinguisher is acceptableC Weigh the extinguisher and compare the weight against that stamped on the valveD Recharge the extinguisher at least once each year” 相关考题
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