【評論主題】1 . (20%) In a two-dimensional, planar flow of an incompressible fluid，the x-component of velocity i

【評論內容】答案仍為D

【評論主題】1 . (20%) In a two-dimensional, planar flow of an incompressible fluid，the x-component of velocity i

【評論內容】

選號應該為

A為必需脂肪酸的來源

B增加食物的可口性

C促進胡蘿蔔素的吸收

D重要的能量來源，尤其對腦細