59.下列哪一個化合物分子內具有雙鍵(double bond)?
(A)乙烷(CH3CH3)
(B)乙烯(CH2CH2)
(C)乙炔(CHCH)
(D)環己烷(C6H12)
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統計: A(32), B(582), C(46), D(51), E(0) #979337
統計: A(32), B(582), C(46), D(51), E(0) #979337