(E) In firms in the metalworking industry where PRP contracts are in place, the average take-home pay is 15 percent higher than it is in those firms where workers have more traditional contracts.
(B) Under PRP contracts costs other than labor costs, such as plant, machinery, and energy, make up an increased proportion of the total cost of each unit of output.
(B) Under PRP contracts costs other than labor costs, such as plant, machinery, and energy, make up an increased proportion of the total cost of each unit of output.
而ETS的解释中说:Choice B is incorrect because it is a natural consequence of increased worker productivity if other costs remain stable. 即如果别的成本都保持不变,那么它(应该是说b选项吧?)就是工人生产率提高的自然结果
sign,觉得自己提问的逻辑也有点乱
总结一下:
1、b项到底啥意思?
我觉得make up 是在这里是组成的意思吧,就是说p、m和e的成本在每一单元产出的成本中占的比例上升了。
2、ETS的解释啥意思?
ETS的解释其实蛮清楚的:即如果别的成本都保持不变,那么它(应该是说b选项吧?)就是工人生产率提高的自然结果。其实仔细想想,假设一个工人一天工资100元,其他成本是每个单元产出(unit of output)10元,一个工人一天生产10个,那么其它成本在每个单元产出中占的比例是50%;一旦工人的生产率提高到一天产13个,那么自然地其他成本在每个单元产出中占的比例为130/230>50%,这就是ETS的意思。