What knowledge do weak current technicians need to prepare for automatic interview of fresh graduates?

Attitude, as long as it can make the interviewer feel that you really want to engage in this industry, you can stay in the company for a long time.

Everything, experience is practiced in practice. However, you already have the concept of this theory in your mind, which is where you are superior to people with zero concept.

Come on, I hope you get what you want.