• 2022-06-30
    图示桁架各杆EA相同,为常数。则结点C的竖向位移为()。[img=203x105]18038589c274ef1.jpg[/img]
    A: [img=33x46]18038589ca8398f.png[/img]
    B: [img=33x46]18038589d2a179b.png[/img]
    C: [img=40x46]18038589dae6694.png[/img]
    D: [img=40x46]18038589e37f373.png[/img]