单选题:高层建筑、厂房、库房和室内净空高度超过8m的民用建筑等场所,消防水枪充实水柱应达到(  )。

题目内容:
高层建筑、厂房、库房和室内净空高度超过8m的民用建筑等场所,消防水枪充实水柱应达到(  )。 A.7m
B.10m
C.13m
D.15m
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