发布时间:2025-02-02 03:07:12
【答案】:B、C、D、E
2021教材P100
本题考查的是板式桥、梁式桥的上部结构。选项A 错误,对构件施加预应力有先张法和后张法两种不同的方法,后张法适用于配置曲线形预应力筋的大型预制构件。
westfield outdoor 我飞 折叠床单人床 办公家用两不误详细介绍
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