摘要：下列各组内的物质不属于同系物的是 A.CH3-CH3 (CH3)2CH-CH2-CH3 B.CH3CH=CH2 CH3CH=CHCH3 C.CH3-CH2-OH CH3-CH2-CH2-CH3 D.CH3COOH (CH3)2CHCOOH

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