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【简答题】
图上出现质量数比相对分子质量大1或2的峰，即．M+I和M+2峰，其相对与化合物中元素的天然成______，这些峰是________峰。预测在氯乙烷的分子离子峰附近，将出现两个，其比为__________和_________，其强度比为_______。
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皮皮学刷刷变学霸
举一反三
【简答题】English enlighteners believed in the _____.
【简答题】English enlighteners believed that social problems could be dealt with by ____.
【简答题】English enlighteners believed in the power of ____.
【判断题】There appeared two groups of English Enlighteners. One is the moderate group and the other is the revolutionary group.
A.
正确
B.
错误
【单选题】The more radical group of the English Enlighteners strove to defend the interests of ________.
A.
the labouring masses
B.
the capitalists
C.
the royalists
D.
the revolutionaries