The difficult test sites in the Eighth Hospital, such as communication principle or signal and system, and maritime department, are better test sites and take the school line every year. The first experiment is digital signal processing, and the communication and information system in this direction is biased towards digital signal processing. In addition, the department of power and energy also has this major, but it is difficult to find someone to take the exam. The second interview ratio of the latter two departments is basically one to one. Generally speaking, the retest line of our Eighth Hospital is higher than the school line, and the retest ratio is also high, which is about 1: 1.5.