What does it mean to take the D test for primary and secondary school teachers in Qinghai institutions?

After the reform of public institutions, various industries are divided into five categories, and the examination contents are also divided into five categories accordingly. Examination papers are provided in five categories: comprehensive management (a), social science expertise (b), natural science expertise (c), primary and secondary school teachers (d) and medical and health care (e, including six jobs). Among them, Class D is a teacher post in a public institution, and the contents and questions of different types of exams are different. It is recommended to buy a special D book to read.