29号上海,请教大虾们一道洛基狗,来看看吧看看吧~

ViolaT4ever5

应该选C

但我不得不说一句惭愧 其实一开始我也选的是B 是因为我没看清楚题目

B. Whether the expense of installing the cleaning equipment in a new plant is less than the expense of installing the cleaning equipment in an older plant. 我当时想的是对比安装新的chemical cleaner (也是就是the new one) 的expense和旧的filter的花费的比较 但是我仔细看了看发现其实B选项比较的不是以上两个 我猜当时狗主人应该也犯了同样的错误吧

-- by 会员 melvinperson (2010/11/28 12:27:40)

经楼上同志提醒可能是我看错冤枉那位楼主了....嘿嘿,现在确定了就好啦

ViolaT4ever5

谢谢大家的确认~~~~CDers考试顺利~~~~