单选题:室外楼梯的最小净宽不少于(  )m,倾斜角度不大于45°,栏杆扶手的高度不小于(  )m

题目内容:

室外楼梯的最小净宽不少于(  )m,倾斜角度不大于45°,栏杆扶手的高度不小于(  )m A.0.9,1.1
B.1.1,0.9
C.1.0,1.2
D.1.2,1.0

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答案解析:

某二类高层建筑主楼内地上、二层商场设有自动扶梯连通上下层,自动扶梯的开口部位尺寸18米(宽)宰4米(高),上下连通层的建

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