如果没有灭火水龙带和高空洒水装置，我们的最低标准就是每1000平方英尺的居住面积都应备有一个灭火器。
The minimum standard, where fire hoses or overhead sprinklers are not present, is one fully charged fire extinguisher per 1000 sq. ft. of living space.
如果没有灭火水龙带和高空洒水装置，我们的最低标准就是每1000平方英尺的居住面积都应备有一个灭火器。
The minimum standard, where fire hoses or overhead sprinklers are not present, is one fully charged fire extinguisher per 1000 sq. ft. of living space.
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