2, 302 is the code of the preliminary examination subject. Every subject in the preliminary examination of graduate students has a corresponding code. If the subject code of the initial test in the same school is the same, the test questions are the same, otherwise even if the name is the same, the content of the test questions is different.
3. The initial test subject code is mainly to facilitate the identification and management of postgraduate entrance examination subjects. For example, 1, 2 and 3 all start from the national unified examination, and 6, 7, 8 and 9 start from the subjects independently proposed by the school.