TAT皮试液每0.1ml含()。
A.5U
B.15U
C.150U
D.200U
E.250U
参考答案:B
解析:[知识点] 青霉素过敏试验法及过敏反应的护理
—Who is the girl in the picture?
—Haha! It's me! The picture _____ ten years ago. [ ]
A. took
B. is taken
C. was taken
D. has taken
为了降低采购风险在进货方式上最好采用自提提货。( )