問題詳情
20. C5H10的烯類異構物(包括順反異構物)共有幾種？
(A)7
(B)6
(C)5
(D)4。
(A)7
(B)6
(C)5
(D)4。
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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