常加入聚乙烯醇、聚乙二醇等黏度调节剂的是()
A.眼用溶液剂
B.胶体输液
C.脂肪乳输液
D.注射用无菌粉末
E.混悬液型注射剂
参考答案:A
—Where is Confucius?
—______. [ ]
A. In the evening
B. On Sunday
C. It's Saturday
D. At the Sun Theatre
简述效用的含义。