目前,除了传统的串口和并口外,计算机与外部设备连接的标准接口越来越多。例如, (46

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问题:

目前,除了传统的串口和并口外,计算机与外部设备连接的标准接口越来越多。例如, (46) 是一种连接大容量存储设备的并行接口,数据宽度一般为 32位,且允许设备以雏菊链形式接入; (47) 是一种可热插拔的高速串行设备接口,也可允许设备以雏菊链形式接入; (48) 则用来连接各种卡式设备,已广泛使用于笔记本电脑。

A.PCMCIA
B.VESA
C.EISA
D.PCI

考点:计算机软件水平考试高级系统分析师系统分析师
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电梯安全钳动作后,其电器开关连锁应保证电梯可以向上运行,以便恢复电梯。()

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20世纪上半期,两次世界大战的爆发仅仅相隔了[ ]

A.10年

B.15年

C.20年

D.25年

题型:单项选择题

Questions from 31 to 35 are based on the following passage: There are a lot of “markets”. Some markets are local; you may be willing to compare prices for fruits and vegetables in a few shops in your local area, but you would be unwilling to go across the city to find out more information. Some markets are national. Many firms sell goods across the country. Some markets are global or international. Increasingly, more and more countries are involved in the world economy, whether they know about it or not.However, there are many other markets: labor markets for job seekers, supermarkets for grocery shopping, foreign exchange market, capital market, real estate markets and so on. And we must not overlook the fact that many services such as banking, insurance are also bought and sold on a worldwide scale. But what is a “market” Most people would say, “A market is a place where enough buyers and sellers meet face to face, so that a market price for goods and services can be determined.” However, with rapid growth of telecommunications, it is no longer necessary for buyers and sellers to physically meet to form a market.You may hear the terms “global market” or “global economy”. What do those terms mean to you What do they mean to business today Thanks to the Information Age we are seconds away from the rest of world. Business everywhere recognizes that they can expand their market to anywhere and do business at any time because of the Internet. Now, the Internet is the fastest growing market in the world today, yet buyers and sellers don’t even have to leave their own homes to transact business.In the modern world, a market can take many forms. Generally speaking, a market may be housed in a place, or it may exist only in people’s minds. And a market can be any place or process that brings together buyers and sellers with a view to agreeing to a price.

The stock market, banking services market and capital market can be described as().

A.supermarket

B.financial market

C.labor market 

D.real estate market

题型:单项选择题

工具酶

题型:单项选择题

农业土地适度经营规模的概念和特征?

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