求翻译：2.对战略级管理层、战术级管理层和作业级管理层所做决策的性质进行比较。本案例中，每个管理级别分别需要什么样的信息来做出决策? 哪种信息系统分别可以帮助他们做出决策?是什么意思？

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2. The strategic level of management, and tactical-level management and job level of management decisions made in nature. In this case, each level of management, what kind of information to make a decision? What kind of information system, you can help them make a decision?

2. pair of strategic level management level, the tactical level management level and the working section management level institute makes policy-making the nature to carry on the comparison.In this case, what type does each management rank need the information to make the decision-making separately?

2. on strategic-level management, tactical management and job nature of the decision made by the management were compared. In this case, each management level what kind of information is needed to make a decision? What types of information can help them to make decisions?

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