【简答题】Expressions in use Directions: Fill in the blanks with the following expressions. Change the form where necessary. Each expression can be used only once. Expressions in use prepare for be bound to sta...
【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...