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羊水胎粪污染如何分度及临床意义是什么？

答案

参考答案：

羊水污染分三度。

①Ⅰ度浅绿色

②Ⅱ度黄绿色，浑浊

③Ⅲ度棕黄色，稠厚头先露羊水污染，提示胎儿窘迫；而臀先露羊水污染，不一定是胎儿缺氧表现

单项选择题

关于卵巢单纯性浆液性囊腺瘤，下列哪一项是错误的（）。

A.呈圆形或椭圆形无回声区

B.囊壁纤薄，光滑完整

C.肿瘤轮廓清晰

D.肿瘤内部可见多个分隔和丰富血流

E.囊肿一般为中等大小（5cm--10cm）
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单项选择题

Deflation is an economic theory relating changes in the price levels to changes in the quantity of money. In its developed (1) , it constitutes an analysis of the (2) underlying inflation and deflation. As (3) by the English philosopher John Locke in the 17th century, the Scottish (4) David Hume in the 18th century, and (5) , it was a weapon (6) the mercantilists, who were thought to equate wealth with money. If the (7) of money by a nation merely raised (8) , argued the quantity theorists, then a "favourable" balance of trade, (9) desired by mercantilists, would increase the supply of money but would not in-crease (10) . In the 19th century the quantity theory (11) to the ascendancy of free trade over protectionism. In the 19th and 20th centuries it played a part in the (12) of business cycles and in the theory of foreign (13) rates.

The (14) theory came under attack during the 1930s, (15) monetary expansion seemed ineffective in combating deflation. Economists argued that the levels of investment and government spending were more important than the money supply in determining economic activity.

The tide of opinion (16) again in the 1960s, when experience (17) post-World WarⅡ inflation and new empirical (18) of money and prices— (19) A Monetary History of the United States (1963) by Milton Friedman and Anna Schwartz—restored much of the quantity theory’ s lost prestige. One implication of this theory is that the size of the stock of money must be considered when shaping governmental policies (20) to control prices and maintain full employment.

1（）

A.form

B.shape

C.figure

D.appearance
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