Nowhere in the definition(定义) of computer viruses(病毒) is there any mention(提及) of nonprompted, secret operations(无提示的秘密操作), of destructive actions(破坏性的行为), or of spreading across multiple computer installations(设施).
举一反三
- The most serious damage caused by the viruses is that ______. A: the computer's functions are lowered B: the normal programs are damaged C: all the information stored in the computer is gone D: the computer infected by the viruses can't be used any longer
- ● Computer software is a set of computer ____________(程序). A: programs B: system C: process D: viruses
- Anti-Virus software protects your computer from viruses by ( ) your computer's memory and disk devices.
- online() A: the written text of a play, movie, or television show. B: across any of the oceans; abroad. C: at whatever time; when. D: connected to or reached through a computer or computer network.
- A computer is someone who tries to break into computer systems, especially in order to get secret information.