某物流中心要对A、B、C、D四种产品进行相应的流通加工,加工项目包括两个,一是贴标签,二是封口包装。每种产品均需先在 贴标签机上进行 贴标签,然后在封口机上进行封口操作。各个产品在这两台设备上的加工时间如下表所示: A B C D 贴标机 23 16 8 12 封口机 9 14 10 15 求: 1、根据以上资料,为该物流中心设计一个合理的产品的流通加工顺序。 2、这四件商品的总的加工时间是多少?
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【简答题】Reading comprehension Last week I visited one of my old neighborhoods in Washington D.C. I had not been there for twenty years and as I walked along the street, my mind was flooded by memories of the ...
【单选题】Last week I visited one of my old neighborhoods in Washington D. C. I hadn't been there for twenty years and as I walked along the street, my mind was flooded by memories of the past. I saw the old ap...