影响药物制剂稳定性的处方因素包括（）.
A.辅料或附加剂
B.缓冲体系的种类
C.温度
D.药物溶液的离子强度
E.湿度与水分
参考答案：A, B, D
Little _______ about Xinjiang Qiegao before the Qiegao Event happened in Hunan Province.
A．I had known
B．had I known
C．did I know
D．I knew
怎样判断气缸垫密封是否良好？
