下列规章制度可以减少计算机病毒危害的是
A.定期进行资料备份
B.直接通过硬盘引导计算机
C.对于多人使用的计算机,进行用户登记
D.不要随便打开来历不明的电子邮件
E.对于拷贝的文件要先查毒,再使用
正确答案是ABCDE
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