5、计算机网络除数据通信外，还有除______以外的三种功能。 Computer networks have three functions:___ other than data communications.A.资源共享 ； resource sharing;#B.分布式信息处理； distributed information processing;#C.提高计算机系统可靠性与可用性； improving the reliability and availability of computer systems;#D.网络通信； network communications;
5、计算机网络除数据通信外，还有除______以外的三种功能。 Computer networks have three functions:___ other than data communications.
A.资源共享 ； resource sharing;#B.分布式信息处理； distributed information processing;#C.提高计算机系统可靠性与可用性； improving the reliability and availability of computer systems;#D.网络通信； network communications;参考答案和解析
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controls the operation of the computer and performs its data processing functions．A．CPUB．DiskC．MemoryD．I/O
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The high-speed data services for the interconnection of computer networks are usually referred to as ______ connections．A．LANsB．MANsC．WANsD．ATM
controls the operation of the computer and performs it's data processing functions.A．CPUB．Hard diskC．MemoryD．Database system
The term computer describes a device made up of a combination of electronic components．By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment． The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications． A system is defined as a collection of related components that ( ) to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions． Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ） From time to time, organizations need to (5 ) their information systems, in, response to new marketing' opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．（5）应选（ ）。 A. modifyB. replaceC. ChangeD. transfer
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填空题除润滑外，润滑油还有（）等功能。