1, the exam is not open: the real questions of the military and civilian exams are restricted for internal use and are not open to the public.
2. Regular update: Examination institutions will regularly update the examination contents and question bank as needed to ensure the fairness and effectiveness of the examination. Therefore, the real questions of the old year were replaced by new questions.
3. Copyright and confidentiality: The real topic is restricted by copyright or confidentiality policy, and it is forbidden to spread and use in the public domain.
4. Filing problem: Sometimes, the real questions of a certain year are temporarily unavailable due to loss, damage or filing errors. Therefore, there is no real problem of 20 17 for military and civilian use, including the above four reasons.