标题: OG 42, 怎么也想不明白。。大牛指教！ [打印本页] 作者: clairexuan9 时间: 2012-3-29 08:38 标题: OG 42, 怎么也想不明白。。大牛指教！ Crowding on Mooreville’s subway frequently leads to delays, because it is diffi cult for passengers to exit from the trains. Subway ridership is projected to increase by 20 percent over the next 10 years. The Mooreville Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period. Offi cials predict that this increase is suffi cient to ensure that the incidence of delays due to crowding does not increase. Which of the following, if true, provides the strongest grounds for the offi cials’ prediction? (A) By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars. (B) The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways. (C) For most commuters who use the subway system, there is no practical alternative public transportation available. (D) Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used. (E) The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs.
Delays due to crowding probably would increase if the extra 20 percent total ridership occurred at typically busy times, 这句话想不明白，如果20%在busy times加入了，不是会减少delay的么？。。。作者: xn8510 时间: 2012-3-29 10:23
在busy times加入的20%，是ridership（乘客），上班高峰期乘客数量增加，delay增加~~~作者: clairexuan9 时间: 2012-3-29 10:48
哦哦！ ridership是乘客啊...我还以为是车呢....懂了...