[求助]GWD20-Q27,Q41

Q27:

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.

Determining which of the following would be most useful in evaluating the cogency of the magazine publisher’s response?

1. Whether any other magazines in which the book was reviewed carried more than one review of the book
2. Whether the magazine publishes unsolicited book reviews as well as those that it has commissioned
3. Whether in the event that a first review commissioned by the magazine takes a clearly liberal position the magazine would make any efforts to obtain further reviews
4. Whether the book that was the subject of the two reviews was itself written from a clearly conservative or a clearly liberal point of view
5. Whether most of the readers of the magazine regularly read the book reviews that the magazine publishes

这两道题都没弄懂为什么选那些选项，或许是我题目没弄懂，还请大家帮忙解释一下~

同问第41题