摘要： 下列各组物质不属于同系物的是( ) A. CH3-CH3 CH-CH- CH3 | CH3 B. CH2 ==CH-CH3 CH2==CH-CH2-CH3 C. CH3-CH2-OH CH3-CH2-CH2-CH3 D. CH2 CH2 CH2 CH2 - CH2 CH2- CH - CH2- CH3 | | CH2 CH2 CH2 CH2 CH2 - CH2
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