• 2022-06-17
    下列烯烃最稳定的是?
    A: [img=108x53]1802e13dff793c5.bmp[/img]
    B: [img=108x50]1802e13e09ce3b4.bmp[/img]
    C: [img=108x53]1802e13e15042f6.bmp[/img]
    D: [img=108x50]1802e13e1f66631.bmp[/img]
  • 举一反三