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【单选题】
下列关于建筑消防系统叙述正确的是()。A.
消火栓的布置间距不应大于50m
B.
某6层学生公寓应保证有2支水枪的2股充实水柱达到同层的任何部位
C.
某6层学生公寓室内消火栓给水系统和生活给水系统合用
D.
水枪的射流量(qxh)与水枪喷嘴处的压力(Hq)成正比关系
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A.
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B.
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C.
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