1. Teachers: Teachers are very important positions in public institutions, mainly responsible for education and teaching in schools at all levels. This position needs to have certain education and teaching ability and professional knowledge, and can provide high-quality education services for students.

2. Doctor: The post of doctor is one of the main posts in health institutions, responsible for diagnosing and treating diseases and providing medical services. Doctors need to have solid medical knowledge and clinical skills, and can provide accurate and timely medical services for patients.

3. Scientific research personnel: The positions of scientific research personnel mainly exist in scientific research institutions and are responsible for scientific research and technological innovation. This position requires high scientific research ability and innovative thinking, and can contribute to scientific and technological progress and social development.

4. Cultural librarian: The post of cultural librarian is one of the important posts in cultural institutions, which is mainly responsible for the organization, planning and promotion of cultural activities. This position needs to have certain cultural literacy and activity planning ability, and can provide rich and colorful cultural experience for the public.

5. Librarian: Librarian position is one of the main positions in cultural institutions such as libraries, and it is responsible for book management, lending service and reader consultation. This position requires a certain knowledge of book management and service awareness, and can provide readers with convenient and efficient book services.

6. Environmental Engineer: The post of environmental engineer is one of the main posts of environmental protection institutions, responsible for environmental monitoring, pollution control and ecological protection. This position requires solid environmental knowledge and engineering skills, and can contribute to environmental protection.