阿摩線上測驗
77. An acetal is formed from two molecules of an alcohol and a(n)
(A) aldehyde.
(B) ether.
(C) carboxylic acid.
(D) alkyl ether.
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統計： A(9), B(0), C(1), D(0), E(0) #3577966
統計： A(9), B(0), C(1), D(0), E(0) #3577966
