单选题 Anti-Virus protects your computer from viruses by ( ) your computerˊs memory and disk devices. 的答案

成人教育远程网络教育函授网上考试【计算机专业英语】课程在线考试模拟试题正确答案解析，免费查看【计算机专业英语】作业答案。
题目内容：
Anti-Virus protects your computer from viruses by ( ) your computerˊs memory and disk devices.
题目选项

参考答案价值：100%