2007年11月21日
PL/1 Training
摘要： 15:00--17:30 Cost benefit Cost Benefit Analysis is a technique used to determine whether a planned action will turn out good or bad. Here is how a cost benefit analysis is done. trade off ROI ... 阅读全文
posted @ 2007-11-21 18:17 许晓光 阅读(242) 评论(0) 推荐(0)