Satellite communication has ____.

单选题 Satellite communication has ____.

A、 an uplink and a downlink

B、 a limitation of its application as bad weather can interrupt the flow of data

C、 an interesting application which is GPS

D、 allows the device to be moved from place to place

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单选题 Mobile wireless connection ____.

A、should be used to connect fixed devices

B、should be used to connect mobile devices

C、can be used to access Internet

D、the capability for sending and receiving large volumes of data

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多选题 We usually measure the processing speed in today's computer according to the

A、thousandth of a second 千分之一秒

B、millionth of a second 百万分之一秒

C、billionth of a second 十亿分之一秒

D、trillionth of a second 万亿分之一秒

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单选题 C++ is.

A、object-oriented

B、procedure-oriented

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多选题 With dual-core chip a microcomputer can

A、run two programs at the same time 同时运行两个程序

B、run very large complex programs 运行规模极大的复杂程序

C、take parallel processing 进行并行处理

D、be used to access a large database while creating a multimedia presentation with PowerPoint 在使用PowerPoint制作多媒体演示文稿的同时访问大型数据库

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单选题 A new type.【缺少答案，请补充】

A、is a subclass

B、can be derived from an existing type

C、can't be called a derived type

D、inherits all features of existing type and has additional features

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多选题 Microprocessor 微处理器

A、is the "brains" of the computer system 是计算机系统的"大脑"

B、is mounted onto a carries package(注:应为 carrier package)被安装在载体封装上

C、is contained within a cartridge 被容纳在卡带/盒式磁带中

D、has two basic components: the control unit and arithmetic-logic unit 有两个基本组件:控制单元和算术逻辑单元

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多选题 The 64-bit processor can be used in

A、large mainframe computers 大型主机计算机

B、older microcomputers 较老式的微型计算机

C、supercomputers 超级计算机

D、more powerful microcomputers 性能更强的微型计算机

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多选题 We often express chip capacities in word size, word size can be

A、one byte 一个字节

B、two bytes 两个字节

C、three bytes 三个字节

D、four bytes 四个字节

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