• 2022-07-28
    曲线y=lnx,y=lna,y=lnb,(0A: [img=71x43]1802d343d0d4882.gif[/img]
    B: [img=78x46]1802d343d835eed.gif[/img]
    C: [img=66x46]1802d343e119e0c.gif[/img]
    D: [img=83x43]1802d343ea095b6.gif[/img]