50. 下列何者不是共軛酸鹼對?
(A)NH3 , NH4
(B)H3O , OH-
(C)H2O, OH-
(D)H2PO4 - , HPO4 2-

答案:登入後查看
統計: A(0), B(19), C(3), D(0), E(0) #1593430