5日前阴影在右上肺野,5日后在右下肺野出现,最大可能是()
A.大叶性肺炎
B.支气管肺炎
C.肺结核
D.支原体肺炎
E.过敏性肺炎
参考答案:E
A new kind of drug ___ ___ to cure H7N9 bird flu by the scientists and they are hopeful that they will succeed in a couple of weeks.
A.has been developed
B.is being developed
C.is developing
D.has developed
采用无套利均衡分析技术的要点是( )。
A.复制证券的现金流特性与被复制证券的现金流特性完全相同B.制定能获得超出市场平均水平的投资组合C.复制市场指数D.保证市场的平均水平