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问题 单项选择题

关于信息的说法哪种最准确完整的说法是（）。

A.信息只指一般的行情消息

B.信息就是新闻消息

C.信息的概念非常广泛，从不同的角度对信息可下不同的定义

D.信息（Information），广义地讲，它是信号的模拟型或其符号的集合

答案

参考答案：C

单项选择题

The purpose of (66) is to enlarge the (67) , the set of addresses a program can utilize. For example, it might contain twice as many addresses as main memory. A program using all of it, therefore, would not be able to fit in main memory all at once. Nevertheless, the computer could execute such a program by Copying into main memory those portions of the program needed at any given point during execution.
To facilitate copying (66) into real memory, the operating system divides it into pages, each of which contains a fixed number of addresses. Each page is stored on a disk until ii is needed. When the page is needed, the operating system copies it from disk to main memory, translating the (68) into real addresses. The process of translating virtual addresses into real addresses is called (69) . The copying of virtual pages from disk to main memory is known as (70) or swapping.

A．fake memory

B．false memory

C．virtual memory

D．mendacious memory
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多项选择题

医院的主要工作任务包括 （ ）

A．医疗

B．教育培训医务人员及其他人员

C．开展科学研究

D．预防和社会医疗服务

E．康复医疗
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