药品生产所用物料应符合药品标准、()、生物制品规程或其它有关标准,不得对药品的质量产生不良影响。。
参考答案:包装材料标准
Technically, an individual is unemployed when he or she is actively seeking employment or is:()
A. a retiree.
B. a discourage worker.
C. waiting to return to a job from which he or she was just laid off.
完成下列化学方程式
(1)加热高锰酸钾制氧气______
(2)稀硫酸除铁锈______
(3)红磷燃烧______
(4)氢气还原氧化铜______.