经过足够多次的部分汽化,最后也可以得到易挥发组分含量极低的难挥发组分。
参考答案:对
---Could you tell me when Mr. Li _______ in Changchun?
---Sure. When he _______, I’ll call you.
A.arrives; will arrive
B.will arrive; arrives
C.arrives; arrives
D.will arrive; will arrive
强化食品应该在食品标签上标注“强化食品”字样。