第16题: [单项选择]“蠕虫”病毒按病毒的感染方式分,它属于 A. 宏病毒 B. Interet病毒 C. 引导区型病毒 D. 混合型病毒 参考答案:B 答案解析:[分析]“蠕虫”病毒是Intemet病毒的典型代表,它不占用除内存以外的任何资源,不修改磁盘文件,利用网络功能搜索网络地址,将自身向下一地址进行传播。
第20题: [单项选择]Nevertheless, motorists themselves can try to prevent problems from arising by ______. ( ) A. driving short distances in hot weather B. having their car insured for £ 20 C. driving slowly at all times D. making sure their car is in good working order 参考答案:D