In higher vocational colleges, there is a high using frequency in public computer room, and technical levels of users are different, which brought much inconvenience for computer teachers.

高职院校公共机房使用频率高，使用对象技术水平参差不齐，这给机房管理老师的日常工作带来了很大的不便。

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The FBI has alleged that on April 18, just hours after surveillance camera photos of the Tsarnaev brothers became public, Tazhayakov and two other students went to Dzhokhar Tsarnaev's dorm room and removed his backpack and laptop computer.

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