【多选题】【消耗次数：1】
楼梯一般包括下面哪些构件:()
①
梯段
②
休息平台
③
梯井
④
平台梁
⑤
楼梯连接梁
参考答案：
复制
纠错
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预制梯段和平台梁的连接可采取_____ 或滑动铰支座连接。
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