阿摩線上測驗
18. Which of the following molecules has a characteristic stretch at 3300 cm-1?
(A)(CH3)2CHCO2CH3
(B) (CH3)2CHCH2N(CH3)2
(C) (CH3)3CH
(D)(CH3)2CHCH=CH2
(E) (CH3)2CHC≡CH
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統計： A(1), B(2), C(0), D(0), E(6) #3840028
統計： A(1), B(2), C(0), D(0), E(6) #3840028
