問題詳情

15. The mass spectrum of alcohols often fail to exhibit detectable M peaks but instead show relatively large_peaks.
(A) M+l
(B)M+2
(C) M-16
(D)M-17
(E)M-18

參考答案

答案：E
難度：非常困難0
統計：A(0),B(0),C(1),D(1),E(0)