I took the Dantes Tech Writing in Jan. If you know the parts of a proposal just learn what order they are in I do seem to remember some questions about which comes first. Grammar seemed to be a big part of the test to me. There were questions like a long paragraph and they would ask you the order the sentences should be in or if you added a sentence which version was best, things like that. I also seem to remember a few instances where you needed to do a good job of proofreading the question and answers because one answer seemed better until you noticed a small perposful typo. I remember thinking when I was studying that most of it was stuff you just know if you write much.
Good Luck
