建筑热水管道系统冲洗要求是( )。A.先冲洗底部干管,后冲洗各环路支管 B.先冲洗各环路支管,后冲洗底部干管 C.先冲洗底部水平支管,后冲洗垂直...

作者: rantiku 人气: - 评论: 0
问题 建筑热水管道系统冲洗要求是( )。
选项 A.先冲洗底部干管,后冲洗各环路支管 B.先冲洗各环路支管,后冲洗底部干管 C.先冲洗底部水平支管,后冲洗垂直干管 D.先冲洗上部支管,后冲洗下部干管
答案 A
解析

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