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题库 / GMATLA-CR-70
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?
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.
There is no company that successfully competes with Ace Repairs for complex repair jobs.
Ace Repairs' warranty is good on first-time jobs but does not cover rework jobs.
Ace Repairs does not in any way penalize mechanics who have worked on complex repair jobs that later had to be reworked.
There is no category of repair jobs in which Ace Repairs invariably carries out first-time jobs satisfactorily.
P:当第一次维修结果不满意，在保质期内可以送去第二次维修。往往第二次维修的结果都是让顾客满意的
C：这种现象的原因是精密维修所需要的专注度在二次维修中更容易被引发出来，比起第一次维修
argument给出的原因是concentration不一样，assumption的方向就是否定另一个可以解释premise里的现象的其他原因
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