【单选题】【消耗次数：1】
对于排架结构单层厂房，屋架和屋面梁需要承担的荷载，如下说法中，正确的是（）。
①
只承担部分屋面荷载
②
只承担单轨悬挂吊车的荷载
③
只承担风荷载
④
承担全部屋面荷载和单轨悬挂吊车的荷载
参考答案：
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相关题目
【多选题】
圈梁是排架单层厂房常见的构件，通常不承担上部墙体荷载，因此圈梁与柱子的连接与连系梁方式不同，圈梁可分为（）。
①
现浇两端留筋
②
现浇两端不留筋
③
预制一端留筋，另一端不留筋
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预制两端留筋
⑤
预制两端不留筋
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