最能准确反映阻塞性通气功能障碍的指标是()
A.一秒率
B.肺活量
C.通气储备功能
D.潮气容积
E.肺总量
参考答案:C
看图回答问题:
(1)中英鸦片战争后,清政府被迫割让的中国领土是________。
(2)通过哪个不平等条约割让的?________。
(3)英国破坏了中国的什么主权?________。
(4)这一地区回归祖国的时间是___________。
For an investment portfolio, the Sharpe ratio is best described as a(n): ()
A. Relative measure that indicates risk per unit of mean return.
B. Absolute measure that indicates risk per unit of mean return.
C. Relative measure that indicates mean excess return per unit of risk.