下面四种变化中，有1种变化与其他3种变化类型不同的是
A．CH3CH2OH + CH3OH CH3OCH2CH3 + H2O |
B．2CH3CH2OH CH3CH2OCH2CH3 + H2O |
C．CH3CH2OH CH2=CH2↑ + H2O |
D．CH3CH2OH + HBr CH3CH2Br + H2O |
下面四种变化中，有1种变化与其他3种变化类型不同的是
| A．CH3CH2OH + CH3OHCH3OCH2CH3 + H2O |
| B．2CH3CH2OHCH3CH2OCH2CH3 + H2O |
| C．CH3CH2OHCH2=CH2↑ + H2O |
| D．CH3CH2OH + HBrCH3CH2Br + H2O |
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