求助一道argument

冰蔷薇

官方2010题库的97  一月狗出现了

The following appeared in a presentation by the chief production manager of a machine parts manufacturing company at a management meeting:

“Our factory in Cookville is our most advanced and efficient. It is capable of producing ten drill bits for each dollar of production costs, whereas none of our other factories can produce more than seven drill bits per dollar of production costs. Therefore, we can reduce our overall drill bit production costs by devoting the Cookville factory entirely to drill bit production. Since reducing the production costs of individual machine parts is the only way to achieve our larger goal of reducing our overall production costs, dedicating the Cookville factory entirely to drill bit production and shifting all other machine part production to our other factories will help us to attain that larger goal.”

Discuss how well reasoned . . .etc.

我找不到思路。
就想到一点，是gratuitous assumption其它零件换到其他厂部生产并不一定节省成本从而达到目标。
第二点我不知道对不对？还是gratuitous assumption指说生产钻头的单位成本低但是并不代表生产效率高，由于机器磨损或者用电量等其他成本的增加，也就其实没比其它厂部省成本。能这样写攻击点吗？
大家能不能提供点思路？
谢谢谢谢谢谢~~~~~~~~~~~~~~~~~

冰蔷薇

我自己来顶一下。。。大家帮忙

coolhaoming

1.题目说让D factory的产能全部生产drill pit。如果D factory的其他产能能够生产成本更低的零件，则将其产能转移生产drill pit就是不好的选择。
（还有例如在现在的生产比例安排下D factory生产drill pit 效率高，但是让它一直生产这个部件可能会带来管理和员工厌倦等的问题，从而提高成本）
2.reducing the production costs of individual machine parts 不是唯一降低成本的方法。因为总成本=单台成本*设备数量。且通过加强管理和供货监管等也是很好的降低成本的方法。
3.将其他的部件生产转移到其他工厂不一定能够降低成本，因为其他工厂效率可能更低。从而不能attain the larger goal
多多指教