(1) Specific knowledge refers to the PJ memory of specific and isolated pieces of information, including: first, the knowledge of terms, that is, the knowledge of what specific symbols refer to; The second is the knowledge of specific facts, that is, the knowledge of dates, events, people and places.
(2) The knowledge of ways and means to deal with things refers to the knowledge of ways and means to organize, research, judge and criticize, including: first, conventional knowledge, that is, the knowledge of unique ways to treat and express various phenomena and concepts; The second is the knowledge of trends and sequences, that is, the knowledge of the process, direction and movement of various phenomena in time; Third, the knowledge of classification and categories, that is, the knowledge of categories, organizations, departments and arrangements; Fourth, normative knowledge, that is, normative knowledge on which all kinds of facts, principles, viewpoints and behaviors are tested and judged; Fifth, the knowledge of methodology, that is, the knowledge of inquiry methods, skills and steps used in specific disciplines and in investigating specific problems and phenomena.
(3) The knowledge of universal principles and abstract concepts in the discipline field refers to the knowledge of the main systems and paradigms that organize various phenomena and concepts, including: first, the knowledge of principles and generalizations, that is, the knowledge of specific abstract concepts that summarize the observation results of various phenomena; The second is the knowledge of theory and structure, that is, the knowledge of important principles and their relationships that provide a clear, complete and systematic view of a complex phenomenon, problem or field.