P 186— 188

Investigate the characteristics of qualitative research and quantitative research. There are many differences between quantitative research and qualitative research, but they are not diametrically opposed, but interdependent, interpenetrating and complementary, excluding A; The research hypothesis of quantitative research needs to be set in advance according to the theory, and the hypothesis of qualitative research need not be set in advance. The research hypothesis can be gradually formed and perfected in the process of research, excluding D; Quantitative research pays attention to objectivity and rigor, and the research content has been strictly set in advance. The research content of qualitative research can be changed and adjusted flexibly according to the situation, except for E, the same research topic can be quantitative, qualitative or a combination of both. Qualitative research is based on positivism methodology and qualitative research is based on anti-positivism methodology. So choose BC. The question bank is an examination question bank developed by artificial intelligence algorithm based on big data. According to the test sites, test frequency and difficulty distribution of different tests, we provide test analysis, chapter test questions over the years, pre-test intensive test questions, high-frequency wrong questions and test secret papers. Check the real-time update, the new version of the complete question bank, the answer analysis, the interaction of test friends' notes, and more test materials, all in the test software. ...