Research on the prevention and control of public security risks arising from new technologies Research on prevention and control of food safety risks in China Research on the prevention and control of enterprise managers' criminal law risks research on the prevention and control of British cholera in the Nineteenth century Research and application of public security intelligence technology 并列题名:Research on prevention and control of food safety risks in China 并列题名:Research on the prevention and control of enterprise managers' criminal law risks Research on crime prevention and control system in the new period