The mechanic's math book is said to be very simple. It seems that many high-scoring guides in mathematics of Beihang University have been recommended on the Internet. In terms of logic, I heard that logic points are better than logic books, so I bought a logic point logic exam-oriented tutorial, which seems to be good. I'm going to do the exam-oriented tutorial after I finish my logic. By the way, where did the landlord take the exam?