Better than that. The graduation design pass rate of North China Electric Power University is very high, above 95%. There are usually two situations that require a second defense. First of all, the workload of the paper is not enough or there are conceptual errors in the paper, and the drawings are obviously wrong. The second is that it is difficult for students to answer questions in the defense, which is also impossible. As long as the students do the papers carefully and there are no obvious mistakes in the drawings, there is no problem in clarifying what is written on the papers. As long as this situation is avoided, it will be easy to pass.