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【单选题】
自动喷水灭火系统报警阀组按照要求进行安装，并通过技术检测控制其安装质量。下列报警阀组的安装不符合要求的是（）。
A.
报警阀组垂直安装在配水干管上
B.
水源控制阀、报警阀组水流标识与系统水流方向一致
C.
报警阀阀体底边距室内地面高度为1．2m；侧边与墙的距离不小于0．5m
D.
报警阀组安装在室内时，室内地面不宜增设排水设施
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