Moreover, there are usually three exam opportunities. I can't get 80 points after three exams, and I only have the last chance to make up the exam, which is more troublesome. It is recommended to watch the training video carefully, or log in to the course training at the same time with your colleague's account (the training subject is the same) during the exam, and find the answer through comparison to ensure that you pass it once, but there is also a time limit, so don't delay too long!