【判断题】When transportation costs are added to production costs, it becomes unprofitable to ship some products over a large distance. This is particularly true of products that have a high value-to-weight rat...
【单选题】When transportation costs are added to production costs, it becomes unprofitable to ship some products over a large distance. This is particularly true of products that: 当运输成本增加到生产成本时,远距离运输一些产品就变得无利可图...