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问题 单项选择题

操作系统的一个重要功能是存储管理。以下有关存储管理的叙述，_______是错误的。

A．存储管理的目标是给每一个应用程序分配所需的内存，又不占用其他应用程序的内存

B．存储管理管理的是硬盘和其他大容量存储设备中的文件

C．当系统的内存不够用时，可以借助硬盘的剩余空间实现虚拟内存

D．采取一些措施来阻止应用程序访问不属于自己的内存空间

答案

参考答案：B

解析：[知识点] 操作系统的基本功能[评析] 存储管理主要管理系统的内存资源。

单项选择题 案例分析题

女性，2月龄，因生后即有青紫，呼吸急促来诊。查体：发育营养差，紫绀明显，呼吸浅促，胸骨左缘2～3肋间可闻Ⅱ级SM，P2亢进。心电图示右室肥厚，超声心动图示右心房室增大，左心房室内径小，房间隔中部回声脱失6mm，可探及右向左分流，肺动脉内径增宽，于左房后侧壁可探及4条肺静脉汇成一共同管道，引流至垂直静脉，垂直静脉、无名静脉及上腔静脉均明显增宽

此例X线胸片的典型特征性改变是（）

A.肺血增多

B.肺动脉段突出

C.右心扩大

D.左心扩大

E.纵隔增宽与心影共呈"8"字征
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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.

16（）

A.reversed

B.occurred

C.emerged

D.finished
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