The basic principle of the utility man is that the expected profits are greater than the expected costs.
效用人的基本准则是行为的预期收益大于预期成本。
It is shown by study that human natures consist of economic man, social man, conscious man, complicated man, utility man and so on.
研究表明，人力资源管理学中的人性包括经济人、社会人、自觉人、复杂人、效用人等。
But in daily conversations, it refers to anyone who only plays a bit role such as a utility man or a general handyman in any event, project or business.
但是在日常交流中，“跑龙套”可以指代在任何行当中不起眼的人物，比如勤杂工、四处做零活的工人等。
But in daily conversations, it refers to anyone who only plays a bit role such as a utility man or a general handyman in any event, project or business.
但是在日常交流中，“跑龙套”可以指代在任何行当中不起眼的人物，比如勤杂工、四处做零活的工人等。
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