青霉素属于()。
A.溶液型注射剂
B.注射用无菌粉末
C.混悬剂注射剂
D.乳剂型注射剂
E.注射用水
参考答案:B
解析:
注射剂的分类
Before he started work, I asked the builder to give me a(n)_______ of the cost of repairing the roof.
A.estimate
B.value
C.announcement
D.evaluation
每个5ms的子帧有只有两个转换点(UL到DL和DL到UL)()