• 2022-05-31
    图示任意截面,已知面积为A,形心为C,对z轴的惯性矩为Iz,则截面对z1轴的惯性矩Iz1等于( )[img=185x110]18037a7238d0a2e.jpg[/img]
    A: [img=55x26]18037a7244431f6.jpg[/img]
    B: [img=99x21]18037a724f3e0cd.jpg[/img]
    C: [img=62x23]18037a725b3b250.jpg[/img]
    D: [img=102x23]18037a72666c76d.jpg[/img]
  • 举一反三