Different positions. 1. As the person in charge of the defense, the teacher has high requirements for the thesis, and the defense is even more difficult to pass. The person in charge of the defense should pay attention to remind and ensure that the teachers and students of this group attend the defense on time, maintain the discipline and order during the defense, and ensure the smooth progress of the defense. 2. The defense teachers are the people with the same score and the people who announce the defense results, and their status is different.