Does Google Adsense allow you to put ads in your blog from other websites?

Tweet

So, if you've been following my recent discussions, I've recently applied for Google Adsense. Its still verifying, so I was wondering if I could put ads in my blog from other ad servers (like Adbrite, Adhitz, Bidvertizer, etc). But now I'm wondering if this is a breach of Adsense's ToS, and it will result in my application being rejected. Does anyone have any information on this matter? Thanks!