I read some suggestions for preparing for the exam before. Look at the textbook in the early stage of review and finish the exercises after class. I don't want to talk about sea tactics from the beginning. That's true. I don't have a good grasp of knowledge, but too many questions are easy to mix up. Watching exercises after class is actually just to consolidate the basic knowledge. Personally, I think the exercises after class are not as good as the examples in the textbook. After reading the examples in each chapter, do the examples in the postgraduate entrance examination book to deepen it. Be careful not to do too many questions in the early stage. the key is