單項(xiàng)選擇題冷凝水排水管坡度,應(yīng)符合設(shè)計(jì)文件的規(guī)定。當(dāng)設(shè)計(jì)無(wú)規(guī)定時(shí),其坡度宜大于或等于();軟管連接的長(zhǎng)度,不宜大于()

A.8‰,100mm
B.8‰,150mm
C.1%,100mm
D.1%,150mm


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