• 2022-06-30
    图示结构A点竖向位移(向上为正)为:[img=446x324]180316e5a41b0f7.png[/img]
    A: [img=58x48]180316e5ae4e844.jpg[/img]
    B: [img=46x46]180316e5b8cc63e.jpg[/img]
    C: [img=51x49]180316e5c34addc.jpg[/img]
    D: [img=51x50]180316e5ce8a169.jpg[/img]