67. Which of the following species has a characteristic broad absorption at 3200-3500 cm^-1 in its IR spectrum?
(A) PhCH₂CN
(B) PhCH₂N(CH₃)₂
(C) PhCH₂CO₂CH₃
(D) PhCH₂CH₂OH

答案：登入後查看
統計： 尚無統計資料