采纳了回答
2023-03-15 14:17
狸媔都牁以琓请芳伈elu.baidu/www.ie-d.net?dajk·····································
关注
狸媔都牁以琓请芳伈elu.baidu/www.ie-d.net?dajk·····································
有住小高层二楼的业主，时不时的会遇到二楼下水道堵塞、反水的情况。这是因为一楼是独立下水道，一楼下水压力低甚至没有压力，不太容易堵塞。但一楼低二楼高，二楼及二楼...