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The starting point of JIT production is to minimize waste and make continuous improvement. Waste refers to all activities that cannot create added value. There are seven common waste phenomena in enterprises: waste of excessive production, waste of shutdown for materials, waste of handling methods, waste of processing itself, waste of inventory, waste of action and waste of manufacturing waste and defective products.吕馨眼睛愣愣的看着陈启，然后唰的一下，脸蛋骤然红了。The scenarios used in the command mode include: sometimes it is necessary to send a request to some objects, but I don't know who the recipient of the request is or what the operation of the request is. At this time, I hope to design the program code in a loosely coupled way; So that the request sender and the request receiver eliminate the coupling relationship in each other's codes.眼下大伙是同袍，上阵杀敌的时候，随时有丢掉性命的危险，身边的兄弟可是能救命的。此时他确实有重要事情要向尹旭禀报。