标题: 请大神Helr解答 [打印本页] 作者: erintan06 时间: 2013-6-3 11:25 标题: 请大神Helr解答 Companies adopting a piece work bonus system pay individual bonuses for daily output above the standard. Among machine tool manufacturing companies last year, those employing a piece work bonus system displayed on average the same output per worker as those without such a system in place.
If, on the basis of the evidence above, it is argued that piece work bonus systems have no positive effect on output per worker, which of the following, if true, would most seriously weaken the argument?
(A) Outcomes similar to those cited for machine tool manufacturing companies have been observed in other industries where piece work bonus systems have been adopted.
(B) Among companies employing a piece work bonus system, costs other than labor costs, such as research and development, make up a smaller relative proportion of the total cost of each unit of output.
(C) Because the introduction of a piece work bonus system significantly alters a worker's relationship to his or her employer, negotiating the introduction of a piece work bonus system is complicated and time-consuming,
(D) Over the past five years, most machine tool manufacturing companies have boosted performance either by modernizing production equipment or by adopting a piece work bonus system, but not both.
(E) Among workers in the machine tool manufacturing industry, those employed by companies utilizing a piece work bonus system earn no more money overall, including bonuses, than do those working for companies without such a system in place.
请问Helr老师，这道题应该是用什么的推理模式呢？
做题的时候，我一开始采用的是类比，但是发现这道题和下面这道题很像：
Installing scrubbers in smokestacks and switching to cleaner-burning fuel are the two methods available to Northern Power for reducing harmful emissions from its plants. Scrubbers will reduce harmful emissions more than cleaner-burning fuels will. Therefore, by installing scrubbers, Northern Power will be doing the most that can be done to reduce harmful emissions from its plants.
Which of the following is an assumption on which the argument depends?
(A)Switching to cleaner-burning fuel will not be more expensive than installing scrubbers.
(B)Northern Power can choose from among various Kinds of scrubbers, some of which are more effective than others.
(C)Northern Power is not necessarily committed to reducing harmful emissions from its plants.
(D)Harmful emissions from Northern Power's plants cannot be reduced more by using both methods together than by the installation of scrubbers alone.
(E)Aside from harmful emissions from the smokestacks of its plants, the activities of Northern Power do not cause significant air pollution
但是我本人还是觉得如果用因果关系的话，那么
前提（因）： those employing a piece work bonus system displayed on average the same output per worker as those without such a system in place
结论（果）：piece work bonus systems have no positive effect on output per worker