那个州?看样子水管埋的很浅。许多地方对水管的深度都有规定,比如在费城附近水管的深度一般为3英尺深,以防冬天冻裂。
那个州?看样子水管埋的很浅。许多地方对水管的深度都有规定,比如在费城附近水管的深度一般为3英尺深,以防冬天冻裂。
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