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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
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更多 “ Portable carbon dioxide fire extinguishers should be sent ashore to be rechargedA.when the remaining charge volume is less than 90 percent of the required volumeB.at each inspection for certificationC.at each annual inspectionD.when the weight loss exceeds 10% of weight of charge ” 相关考题
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