The degree of differentiation of ABC in public institutions is relatively large, of which Class A is a comprehensive management position, which is also commonly known as office workers; Class B posts are functional posts, mainly responsible for science, education, culture, health and other work, commonly known as mission posts; Class C jobs are mainly technical jobs. Generally speaking, it is mainly based on "station", and many units have the word "station" in their names. The test difficulty of the three types of jobs is the biggest in Class A and the smallest in Class C, and the work in Class C is so hard that no one wants to go. So there are only three one-stop jobs every year, in fact, to make up for the loss rate of class C jobs. In order to let everyone better distinguish various types of units, here is a list of the units in the three types of career positions.

Class A positions in public institutions are generally comprehensive management positions, such as the Agricultural Science Research Institute under the Municipal Agriculture Commission; Water conservancy management department under the Water Conservancy Bureau; Road administration under the Highway Administration Bureau; It is subordinate to the environmental monitoring station, the Administrative Committee of the New District, the Municipal Daily, the Municipal Animal Husbandry Bureau, the Municipal Quality and Quarantine Bureau, the Municipal Street Office, the Public Utilities Administration Bureau, the Labor Bureau, the Market Supervision Bureau, the Finance Office, the Land and Resources Bureau and other departments.

Class B posts in public institutions are generally social science propaganda posts, including: provincial party schools, vocational and technical colleges, history museums, libraries, art galleries, archaeological research institutes, IT technical colleges, commercial vocational colleges, urban vocational colleges, welfare homes, charity federations, special schools, mission centers, real estate registration centers, career development promotion centers, public resource trading centers, and employment service centers for the disabled.

Class C posts in public institutions are mainly specific technical functional departments, including the following: Internet information security center, 1 10 police service center, Academy of Agricultural Sciences, animal disease prevention and control center, street lamp management office, food and drug inspection office, land planning and construction environmental safety supervision station, grass-roots veterinary station, forestry workstation, crop pest forecasting station, agricultural technology extension station, water conservancy station, etc.