高等继续教育 / 计算机专业英语
正确率：100%
题型描述: 多选题
What make it is difficult to agree on how to count viruses?
A.some viruses can creaｔe different versions when they infect other programs
B.some viruses can use polymorphic technique
C.just a trivial change may creaｔe a new virus
D.new virus arise from an existing virus
What make it is difficult to agree on how to count viruses?
A.some viruses can creaｔe different versions when they infect other programs
B.some viruses can use polymorphic technique
C.just a trivial change may creaｔe a new virus
D.new virus arise from an existing virus
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