下列属于非破坏性检验的有：（）A.取样试验 B.外观检查 C.密封性检查 D.无损检

每一提升装置，除常用信号装置外，（）有备用信号装置。

A、不准

B、严禁

C、还必须

封闭式基金的买卖价格受市场供求关系的影响，常出现溢价或折价现象，并不必然反映单位基金份额的净资产值。( )

下列关于我国古代科技成就的说法，正确的是( )。

A．春秋战国时期的《太初历》是我国第一部比较完整的历法，也是当时世界上最先进的历法
B．生活在东汉时期的张仲景被后世尊称为“医圣”，他的代表作《伤寒杂病论》被誉为“东方药学巨典”
C．赵州桥又名安济桥，是世界现存最早的大型敞肩拱桥，为宋朝李春所造
D．《尚书·禹贡》是我国已知最早的地理学学术专著，其中提到了把中国划分为“九州”的地理观念

液化石油气供应系统主要由五个部分组成，以下哪一个不是其组成部分（）。

A.运输系统

B.供应基地

C.变电站

D.气化和混气系统

E.瓶装供应系统

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.

18（）

A.studies

B.discovers

C.findings

D.questions