Research on crime prevention and control system in the new period Research on the prevention and control of enterprise managers' criminal law risks Research on international cooperation in the prevention and control of duty-related crimes in the new era 并列题名:Research on the prevention and control of enterprise managers' criminal law risks Research on prevention and control of food safety risks in China Research on optimizing the spatial distribution of regional economy in the new period Research on the prevention and control of public security risks arising from new technologies Research on the private enterprises adjustment modes for labor relations in the new period