• 2022-07-26
    由曲线[img=85x20]17e440b09a92c6a.jpg[/img]围成的封闭图形面积为( )
    未知类型:{'options': ['', ' [img=11x33]17e437126a9c40e.jpg[/img]', ' [img=11x33]17e4362bee12768.jpg[/img]', ' [img=18x33]17e440b0a3eb731.jpg[/img]'], 'type': 102}