下列反应中，属于取代反应的是
①CH3CH=CH2+Br2
CH3CHBrCH2Br
②CH3CHO+2Ag(NH3)2OH
2Ag↓+CH3COONH4+3NH3+H2O
③CH3COOH+CH3CH2OH
CH3COOCH2CH3+H2O
④C6H6+HNO3
C6H5NO2+H2O
| A．①② | B．③④ | C．①③ | D．②④ |
下列反应中，属于取代反应的是
①CH3CH=CH2+Br2CH3CHBrCH2Br
②CH3CHO+2Ag(NH3)2OH2Ag↓+CH3COONH4+3NH3+H2O
③CH3COOH+CH3CH2OHCH3COOCH2CH3+H2O
④C6H6+HNO3C6H5NO2+H2O
| A．①② | B．③④ | C．①③ | D．②④ |
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