gwd-7-27

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.

Answer: A

可以帮忙翻译一下 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. 吗?看不懂这句话啊

最后一句话大体意思是：完成复杂维修的技能(focused concentration )产生于“rework jobs".

AR作的大多数维修工作必须重修，重修很令人满意。首次修理不太充分，不是修理人员没水平，而是要求的侧重点不同，二修要求高点。结论两个TAHT并列修饰LEVEL

A:  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.(对A取非，即两组修理工间有系统差别，则削弱题中所述“一修不充分，不是因为修理工缺乏能力”。因此选A)

关于这道题我还是有个疑问，A取非的意思是：first job和rework的工人有systematic分别，但有systematic分别就可以否定结论：it is not because the mechanics lack competence 吗？也就是说有systematic分别就可以说：it is because the mechanics lack competence 吗？

我是这么想的A取非得：first job和rework的工人有systematic分别（同时题目已告知（背景）1、两次工作侧重点不同，2、rework的工人干得不错，也就是水平高，），那完全可以是rework的工人水平高，同时first job的工人水平也高，但由于两次工作侧重点不同，所以两组水平高的工人之间是有systematic分别。所以我觉A是不够严谨的，但其它答案也确实不对。

请大家讨论

my understanding about this sentence:

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

focused concentration: 焦点集中

that complex repairs require 是focused concentration 的定从

that is elicited more reliably by rework jobs than by first-time jobs是a level 的定从