食品中合成着色剂按其化学结构的不同可分为偶氮类色素和()。
参考答案:非偶氮类色素
Directions:
Study the following drawing carefully and write an essay in which you should
(1) describe the drawing,
(2) interpret its meaning, and
(3) give your comments.
国家电网公司安全生产的三个百分之百的要求指的是()。
A、人员
B、时间
C、精力
D、物力