对慢性阻塞性肺气肿的诊断,最有价值的是()。
A.动脉血氧分压低于正常
B.潮气量低于正常
C.肺活量低于正常
D.残气量/肺活量低于40%
E.以上都不对
参考答案:D
《传染病防治法》规定,在传染病暴发、流行时,当地政府可报上级政府决定采取必要的紧急措施。下列措施中该法律中没有规定的是()
A.限制或停止集市、集会、影剧院演出或者其他人群聚集的活动
B.停工、停业、停课
C.单位控制不出差、个人少外出
D.封闭可能造成传染病扩散的场所
E.封闭被传染病病原污染的公共饮用水源、食物等
Which of the following is NOT a reason that the aggregate demand curve slopes downward()
A. The wealth effect causes consumers to spend less when the price level rises.
B. Higher interest rates encourage consumers to delay major purchases.
C. Because entitlements are adjusted for inflation, a rising price level forces government spending to increase.