【名词&注释】
缓冲区(buffer)、数据表(data table)、打印机(printer)、数据类型(data type)、超链接(hyperlink)、程序语言(programming language)、通信子网(communication subnet)、效率高(high efficiency)、低级语言(low level language)、许可证。
[单选题]不能用于连接打印机。
A. AGP接口
B. IEEE-1284接口总线。
C. CENTRONIC接口总线
D. RS- -232C接口总线
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举一反三：
[单选题]程序语言可划分为低级语言(low level language)和高级语言两大类。与高级语言相比，用低级语言(low level language)开发的程序，其(45)。
A. 运行效率低，开发效率低
B. 运行效率低，开发效率高(high efficiency)
C. 运行效率高(high efficiency)，开发效率低
D. 运行效率高(high efficiency)，开发效率高(high efficiency)
[单选题]如果在Access的一个数据表中含有图片，那么图片所在的字段通常被定义为(67)数据类型。
A. 备注
B. 超链接
C. OLE对象
D. 文本
[单选题]In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.Spread spectrum simply means that data is sent in(66)pieces over a number of the discrete frequencies available for use at any time in the specified range. Devices using(67) spread spectrum (DSSS)communicate by splitting each(68)of data into several parts and sending them concurrently on different (69), DSSS uses a lot of the available(70), about 22 megahertz (MHz).
A. small
B. high
C. low
D. long
[单选题]During the last few years, it has been realized that maintenance of programs is more expensive than development, so reading of programs by humans is as important as(67)them.
A. editing
B. writed
C. written
D. writing
[单选题]网络层中，可以采用有效的方法防止阻塞现象的发生。在阻塞控制方法中，直接对通信子网(communication subnet)中分组的数量进行严格、精确地限制，以防止阻塞现象发生的方法为(20)。
A. 定额控制法
B. 分组丢弃法
C. 缓冲区预分配法
D. 存储转发法
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