阿摩線上測驗
23. How many elements of unsaturation are implied by the molecular formula C8H11N?
(A)0
(B) 1
(C) 2
(D)3
(E) 4
答案：登入後查看
統計： A(0), B(0), C(1), D(1), E(8) #3840033
統計： A(0), B(0), C(1), D(1), E(8) #3840033
