• 2021-06-20
    曲线http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/ff00d2a6024a4eb692728483bd85cdd3.png与直线http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/4b70093572ea48ee9c4eb46bc8b3e33f.png 所围成的图形绕x轴旋转所产生的立体的体积(      )

    举一反三