To regret (wasting time, energy and money) and not to smile (I am lucky). I have been there. There are only a few sets of servos in the mechanism, and there are not many 300PLC! When I laugh, hehe, those teachers have no practical experience in knowledge theory, and some have no knowledge theory in practice. How to teach? The lecture seems to be in a hurry (I don't care about the students' mastery), and there is only one class a month (excluding holidays and Sundays). What hurts is the dormitory. Stop talking and see for yourself (be careful not to be brainwashed)! It is said that many people go to Baidu, and the rules forbid me to speak! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !