• 2022-07-02
    ‌按酸碱质子理论考虑,在水溶液中既可作酸亦可作碱的物质是‏
    A: [img=41x23]1803818757f07a5.png[/img]
    B: [img=52x24]180381876051984.png[/img]
    C: [img=60x27]1803818768bca5f.png[/img]
    D: [img=52x21]18038187715a4c4.png[/img]