影响药物制剂稳定性的处方因素有()
A.pH值
B.溶媒
C.离子强度
D.温度
E.氧气
参考答案:A, B, C
—Oh, dear, I _____ my English book at home.
—Oh, I′m sorry to hear that. [ ]
A. put
B. left
C. forgot
D. took
()坡口加工最容易。