单选题：Due to the popularity of smart phones with web access，it bec

题目内容：

Due to the popularity of smart phones with web access，it becomes more difficult to enforce what employees are doing during work time.

参考答案：

答案解析：

The generation of “media multiplexity” tends to consider el

The generation of “media multiplexity” tends to consider electronic tools as a

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Kraft Foods Inc．opened web access to the employees on the condition that they u

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One way to spot the green fakery is to see whether the company makes its custom

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关于纯铝的特点，叙述错误的是（　　）。A．导电性好 B．电气工程、航空及宇航工业、一般机械和轻工业中广泛应用 C．纯铝的密度只有2．8g／cm3 D．磁化率极低

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背景资料某成品燃料科外输项目，由4台5000m3 成品汽油灌，两台10000m3消防罐，外.输泵和工作压力为4.0Mpa的外输管道及相应的配套系统组成。具备

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