阿摩線上測驗
8. Among the butane conformers, which occur at energy minima on a graph of potential energy versus dihedral angle?
(A) gauche only
(B) eclipsed and totally eclipsed
(C) gauche and anti
(D) eclipsed only
(E) anti only
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統計： A(0), B(2), C(3), D(0), E(2) #1036994
統計： A(0), B(2), C(3), D(0), E(2) #1036994
