• 2022-07-02
    直径为d的圆形截面对形心轴的惯性矩为( )?
    A: [img=27x46]1803190d6bab0c1.png[/img]
    B: [img=27x46]1803190d73cb4ca.png[/img]
    C: [img=27x46]1803190d7c9daf2.png[/img]
    D: [img=27x46]1803190d8566485.png[/img]