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23. On a certain day, nine scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation is due to mechanical problems with the airplane scheduled for a certain flight. However, since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day, some of the nine cancellations were probably due to something else. The argument depends on which one of the following assumptions?
A. More than one or two airplanes were scheduled for the nine canceled flights. B. Swift Airlines has fewer mechanical problems than do other airlines of the same size. C. Each of the canceled flights would have been longer than the average flight on Swift Airlines. D. Swift Airlines had never before canceled more than one or two scheduled flights on a single day. E. All of the airplanes scheduled for the canceled flights are based at the same airport.
since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day, 我觉得关键是这句话,但我没理解好。 我 的理解是“不可能出现一架飞机出现多于2次由于机器问题而取消航班的情况“
since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day, 我觉得关键是这句话,但我没理解好。 我 的理解是“不可能出现一架飞机出现多于2次由于机器问题而取消航班的情况“ 要是答案是A的话,由于是多于1(设为10) 架飞机,那尽管每架不多于1-2次,总数也可以 达到9次啊,那就不是其他问题了,那就是对原结论削弱阿,怎么还是原来的假设呢?
要是答案是A的话,由于是多于1(设为10) 架飞机,那尽管每架不多于1-2次,总数也可以 达到9次啊,那就不是其他问题了,那就是对原结论削弱阿,怎么还是原来的假设呢?
我觉得答案经过排除后勉强选e
我觉得答案经过排除后勉强选e
[此贴子已经被作者于2007-7-25 23:18:36编辑过] |