问一道题！xdf补充材料17题！

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snowdrop1

楼主

发表于 2003-10-15 11:50:00 | 只看该作者

问一道题！xdf补充材料17题！

答案是d: competitors that do invest in a new prosess might reduce their selling prices and thus take market share away from companies that do not.

我怎么觉得a对呢？
a:the costs of materials requires by the new process might not be known with certainty.

题太长了，就不抄了，哪位朋友给解释一下？
多谢