2. 外语
  3. For security reasons, always log ______ when you leave your computer unattended for any period of time.

For security reasons, always log ______ when you leave your computer unattended for any period of time.

admin2009-12-11  89
问题 For security reasons, always log ______ when you leave your computer unattended for any period of time.
选项 A、on
B、up
C、in
D、out
答案D
解析 句意：出于安全考虑，当你一段时问不用电脑时，你最好退出系统。log out退出。log on 登录。log in注册。
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本试题收录于： A类竞赛（研究生）题库大学生英语竞赛（NECCS）分类
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A类竞赛（研究生）

大学生英语竞赛（NECCS）

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