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乙醇的质子核磁共振谱中有几组峰?它们的面积比为多少? ( )

单选题
2021-09-02 00:03
A、2组;1:2
B、2组;5:1
C、3组;1:2:3
D、3组;1:2:2
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正确答案
C

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