• 2022-07-26
    由曲线[img=85x20]17e0b5a5cd301ee.jpg[/img]围成的封闭图形面积为( )
    未知类型:{'options': ['', ' [img=11x33]17e0a912b48a7ec.jpg[/img]', ' [img=11x33]17e0a68c101c165.jpg[/img]', ' [img=18x33]17e0b5a5d885e83.jpg[/img]'], 'type': 102}