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  3. Industrial psychologists have also studied the effects of fatigue on workers to de-termine the length of working time that yield

Industrial psychologists have also studied the effects of fatigue on workers to de-termine the length of working time that yield

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问题 Industrial psychologists have also studied the effects of fatigue on workers to de-termine the length of working time that yields the greatest productivity.
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答案产业心理学家还研究疲劳对工人的影响，来决定能够产生最大生产率的工作时间长度。
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