在石油、化工生产过程中进行设备检修时，进入设备内作业应办理设备内安全作业证，严格履行

An analyst compared the performance of a hedge fund index with the performance of a major stock index over the past eight years. She noted that the hedge fund index (created from a database) had a higher average return, higher standard deviation, and higher Sharpe ratio than the stock index. All the successful funds that have been in the hedge fund database continued to accept new money over the eight-year period. Are the average return and the standard deviation, respectively, for the hedge fund index most likely overstated or understated Average return for the Standard deviation for the hedge fund indes hedge fund index（）

A. Understated Overstated

B. Overstated Understated

C. Overstated Overstated

血氯增高见于（）。

A.库欣综合征

B.慢性肾功能不全

C.糖尿病

D.呼吸性酸中毒

E.严重呕吐

装配过盈量较大的轴承时，一般可采用锤击法。

2011年2月，中国实行海陆空联动，从动荡的利比亚共撤出3万多人。这是

新中国成立以来最大规模的有组织撤离海外中国公民行动，充分体现了

①国家尊重和保障公民的合法权益

②中国坚定地维护自己的国家利益

③国家切实行使独立权与自卫权

④国家切实行使管辖权

A．①②③

B．①②④

C．②③④

D．①③④