Portable carbon dioxide fire extinguishers should
Portable carbon dioxide fire extinguishers should be sent ashore to be recharged
A.when the remaining charge volume is less than 90 percent of the required volume
B.at each inspection for certification
C.at each annual inspection
D.when the weight loss exceeds 10% of weight of charge
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:D
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