23. Which of the following pairs is interconverted in the process of mutarotation?
(A) D-glucose and D -fructose
(B) D-glucose and D-galactose
(C) D-glucose and D-glucosamine
(D) D-glucose and L-glucose
(E) a-D-glucose and β-D-glucose
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中