• 2022-07-02
    图示为一边长为a正方形截面,y、z为截面的两对称轴,y1、z1为过截面形心的两正交轴,则截面对轴的y1的惯性矩以及对y1、z1轴的惯性积分别为()[img=338x284]1802f8dbf8ec841.jpg[/img][img=338x284]1802f8dc0474228.jpg[/img]
    A: [img=83x55]1802f8dc0f1cbb8.jpg[/img]
    B: [img=105x55]1802f8dc1982320.jpg[/img]
    C: [img=71x53]1802f8dc24daa7d.jpg[/img]
    D: [img=85x56]1802f8dc30116b2.jpg[/img]
  • 举一反三