• 2022-06-08
    ‍铅垂圆柱体开孔,侧面投影正确的是( )。‍‍[img=432x910]1802da6fa3a7b54.png[/img]‍
    A: [img=383x487]1802da6faf544b0.png[/img]
    B: [img=397x491]1802da6fbacec3b.png[/img]
    C: [img=375x475]1802da6fc549ff1.png[/img]
    D: (空白)