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【单选题】
下列属于网络信息安全措施的是()A.
定期重新安装操作系统
B.
经常进行磁盘碎片整理
C.
经常更换资金帐户的密码
D.
经常重启Model或路由器
拍照语音搜题，微信中搜索"皮皮学"使用
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