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把握关键路径的目的是为了优化项目计划。优化的方法是不断均衡项目的工期与成本,按照工期一定成本最低或成本一定工期最短的标准寻找最优方案。
The purpose of grasping the key path is to optimize the project plan. The optimization method is to constantly balance the duration and cost of the project and find the optimal solution according to the criteria that the duration of the project is the lowest or the cost is the shortest.