• 2022-07-26
    图示刚架截面A的弯矩为( )。[img=245x182]1803a83105bd88f.jpg[/img]
    A: [img=138x27]1803a8311145d32.jpg[/img]
    B: [img=139x24]1803a8311cfef7d.jpg[/img]
    C: [img=137x26]1803a83127e432c.jpg[/img]
    D: [img=136x26]1803a83132bbf4f.jpg[/img]
  • 举一反三