Q38:A significant number of complex repair jobs carried out by Ace Repairs have to be reworked under the company’s warranty.  The reworked jobs are invariably satisfactory. When initial repairs are inadequate, therefore, it is not because the mechanics lack competence; rather, there is clearly a level of focused concentration that complex repairs require that is elicited more reliably by rework jobs than by first-time jobs.

 The argument above assumes which of the following?

1. There is no systematic difference in membership between the group of mechanics who do first-time jobs and the group of those who do rework jobs.

2. There is no company that successfully competes with Ace Repairs for complex repair jobs.
3. Ace Repairs’ warranty is good on first-time jobs but does not cover rework jobs.
4. Ace Repairs does not in any way penalize mechanics who have worked on complex repair jobs that later had to be reworked.
5. There is no category of repair jobs in which Ace Repairs invariably carries out first-time jobs satisfactorily.  

谁帮我解释一下题干？谢谢

Ace Repairs 的工作总是要大量重做,因为重做的工作可以百分百的满意.文章主

要想说明为什么初始工作做得不好而重做就能做好的原因在于:不是初始工作技术上

有什么问题,而是因为初始工作和重做工作会带来focused concentration上面的差异,

 而focused concentration在重做工作中更加可靠.

A 是正确答案,因为它排除了另一个因素即人员素质的差异.对A取非,如果人员素质在

初始工作和重做工作之间有差异,那就不能说是focused concentration的问题了.

有道理