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93.The following appeared in a memo from a vice president of a large, highly diversified company. "Ten years ago our company had two new regional office buildings built in two different regions. The buildings were erected by two different construction companies-Alpha and Zeta. Even though the two buildings had virtually identical floor plans, the building constructed by Zeta cost 30 percent more to build, and its expenses for maintenance last year were twice those of the building constructed by Alpha. Furthermore, the energy consumption of the Zeta building has been higher than that of the Alpha building every year since its construction. Such data, plus the fact that Alpha has a stable workforce with little employee turnover, indicate that we should use Alpha Construction Company, rather than Zeta, for all future building projects." | 
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发表于 2009-7-7 17:29:35
发表于 2009-7-8 19:51:17
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