Back in the past, Professor Zhou Liangde from the School of Mechanical Engineering taught us that we all did it ourselves, and there was no answer. The teacher spoke very well. Of course, some people will copy others, and that plagiarism is useless after all. Do it yourself, even if you are wrong, you will get something.
I finished all the exercises at the beginning, and the teacher did make a lot of mistakes after correcting them, but it didn't affect that I got the first place in the hospital and got 90 points. I forgot!
I'm from the Department of Mechanics, Geotechnical College!