炼白降丹的关键是（）
A.配料
B.坐胎
C.收丹
D.火候
E.去火毒
参考答案：B
In relation to the dismissal of employees, describe the circumstances when the following may occur:
(a) Constructive dismissal; (3 marks)
栓剂
A．包封率B．融变时限C．热原D．释放度E．溶出度 下列剂型对应的质量检查的项目之一是
