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计算机最主要的工作特点是( )。
A
高速度
B
高精度
C
存储记忆能力
D
存储程序和程序控制
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试题答案:
D
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8. 英文缩写CAD的中文意思是( )。
OSI(开放系统互联)参考模型的最低层是( )。
可以在“另存对话框”中创建文件夹。
在中文Windows 中,要输入中文间隔号(·),应按的键是( )。
简述操作系统的分类,列举几种常见的操作系统,它们各属于什么类型?
组成计算机的主机的部件是( )。(1分)
与十六进制数(AB)等值的二进数是( )。
微型计算机中使用的人事档案管理系统,属下列计算机应用中的( )。
计算机程序设计语言的翻译程序有( )。
指令和数据在计算机内部都是以区位码形式存储的。
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1.
遵义会议后,全权负责红军的军事行动的新的三人团是( )
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第15题 事物的性质主要是由( )
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22. Urban growth, also known as urbanization (城市化),sped up dramatically with the coming of industrialization some 200 years ago. At that time, large numbers of people moved to cities in search of jobs, mostly in factories. But the most rapid growth has taken place over the past 50 years. While less than one-third of the world’s population lived in cities in 1950, about two thirds of humanity is expected to live in urban areas by 2030.Urban is defined as “that which is characteristic of a city.” But what exactly is a city? In the past, walls may have defined a city. But today’s city boundaries are often unclear. Are suburbs parts of cities? Depending on the boundaries used, Tokyo can have a population of anywhere between 8 and 40 million people.Cities make a lot of sense for humans. People are concentrated in a small space rather than being spread out over a large territory. This allows the government and others to provide more service such as water, electricity, and transportation to a larger number of people. Schools and shops are more easily accessible than in rural areas.Cities have always been at the center of economic growth and technological advances. The promise of jobs and prosperity pulls people to cities. But their rapid growth has also brought with it many negative things: violence, poverty, overcrowding, health problems, and pollution. Many cities in developing countries in particular are growing too rapidly for their own good, with many residents unable to find jobs and forced to live in slums.(10分)22.1 About years ago, people left for cities to find .(2分)A. foodB. clothesC. jobs D. factories
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关系R与关系S只有一个公共属性,T1是R与S等值连接的结果,T2是R与S自然连接的结果,则()
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要把一张照片输入计算机,必须用到______。(1分)
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