大家帮着看看我的背景可以申请到top30的学校吗

国内比较好的重点大学本科，理工科背景，GPA 3.0；

1年技术，3年技术销售（私企），2年500强销售代表；

G：750,  T未考

打算申请08年的MBA

我要是有这样的成绩，就把0去掉，申请top3

You odds are decent, but not overwhelming, for Top 20 bizschools. You have a so-so GPA and Gmat score( according to this year's statistics). Your work exprience can become either your strength or weakness, depending on how well you manage to tell the story in your essays. 

You can try top 15 schools. And it's very likely that 15-50 ranked schools will provide full scholarship to you. Good luck!