• 2022-06-08
    ‍已知带有圆柱孔的球体的四组投影,正确的画法是图​
    A: [img=95x128]1803bdc10eb7f5d.jpg[/img]
    B: [img=93x127]1803bdc11a4fa96.jpg[/img]
    C: [img=82x125]1803bdc1250d5fe.jpg[/img]
    D: [img=77x129]1803bdc13096940.jpg[/img]