問題詳情

3. Which one of the following structures represents a different compound from the other three? 

(A) 1
(B) 2
(C) 3
(D) 4
(E) All of the above are the same.

參考答案

答案:D
難度:簡單0.875
統計:A(1),B(0),C(0),D(14),E(1)

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