试题与答案

多层建筑封闭楼梯间设置的要求有（）。 A.当不能天然采光和自然通风时，应按防烟楼梯间

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题型：多项选择题

题目：

多层建筑封闭楼梯间设置的要求有（）。

A.当不能天然采光和自然通风时，应按防烟楼梯间的要求设置

B.楼梯间的首层可将走道和门厅等包括在楼梯间内，形成扩大的封闭楼梯间，但应采用甲级防火门等措施与其他走道和房间隔开

C.除楼梯间的门之外，楼梯间的内墙不应开设其他门窗洞口

D.人员密集的公共建筑、人员密集的多层丙类厂房设置封闭楼梯间时，通向楼梯间的门应采用乙级防火门，并应向疏散方向开启

E.所有建筑封闭楼梯间均应采用双向弹簧门

答案：

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