按《中国药典》规定,口服混悬剂的沉降体积比应不低于()。
A. 0.6
B. 0.7
C. 0.8
D. 0.9
E. 1.0
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混悬剂的稳定剂包括()。
A. 助悬剂
B. 润湿剂
C. 絮凝剂
D. 乳化剂
E. 反絮凝剂
同一种药物的不同晶型,制备得到的混悬剂稳定性是相同的。()
A. 对
B. 错
If you can make us a firm offer at a ______ price, we will place an order with yourcorporation.
A. competitive
B. comparative
C. subjective
D. objective
We should be pleased to send you some samples of our new typewriter on approval, ______ our own expense.
A. at
B. on
C. for
D. in