题目内容
（请给出正确答案）
A．Operating system
B．I/O devices
C．Courseware
D．Software
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更多“Computer systems consist of tw…”相关的问题
A．entering into computers illegally
B．creating many electronic-age terms
C．removing computer systems
D．going through computer systems
A.worker
B.technician
C.repairman
D.hacker
Sometimes cooling systems have to be installed ______.
A．to keep the computer from becoming too hot
B．in order to save power
C．because they are necessary for a modern computer to work efficiently
D．to ensure the normal working of a mini-computer
What is the way that the computer viruses infect the computer systems？
A.They invade the computer and make it a place for manufacturing.
B.They spread throughout the whole system by quickly copying themselves.
C.They infect the hard disc and the whole system.
D.They spread viruses inside the computer system.
A．so too do
B．as well as
C．likewise
D．therefore
What did the trainers at KTD Computer Systems lack？
A．work experience
B．industry knowledge
C．good training skills
A.good management and good service
B.good offices
C.computer reservations systems
D.fare quotations and ticketing skills
What happened when PC Computer Systems closed down？
A．Many people lost their jobs.
B．The Intrax Company took its place.
C．They broke a contract with city leaders.
D．Other technology businesses left the area.
Computer office systems can deal with ______ in a business environment.
A．personnel in all companies
B．information which can be electronically produced, duplicated, and transmitted
C．staff engaged in business
D．security issues
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