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【单选题】
患者，男，65岁，因“直肠癌”拟行手术治疗。医嘱“青霉素试验”，护士配制好青霉素皮试液后给患者注射。 注射的剂量应是A.
1500u
B.
200U
C.
150u
D.
20U
E.
15U
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【简答题】按分散状态分,固体分散体的主要类型有________ 、________和________等。
【简答题】If you walk slowly through downtown Helsinki(赫尔辛基）during the day, taking in the splendid 19 th century buildings, white boats and noise of passing trams（有轨电车）, you will start to understand why it is c...
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