试题 试卷
题型:单选题 题类:常考题 难易度:普通
①CH3CH=CH2+Br2 CH3CHBrCH2Br
②CH3CH2OH CH2=CH2↑+H2O
③CH3COOH+CH3CH2OH CH3COOCH2CH3+H2O
④C6H6+HNO3 C6H5NO2+H2O
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