問題詳情

22 幾丁質（chitin）的組成單位是：
(A)N-acetyl-D-glucosamine
(B)β-D-mannuronate
(C)N-acetyl-D-galactosamine
(D)α-L-guluronate

參考答案

答案：A
難度：簡單0.798013
統計：A(241),B(4),C(38),D(4),E(0)