Research on the generation and prevention mechanism of mafia-like gangs and evil forces 并列题名：Research on the generation and prevention mechanism of mafia-like gangs and evil forces Research on risk monitoring and prevention mechanism of capital guarantee chain Research on the policy roots and prevention mechanism of firm zombification Research on the development and operation mechanism of think tanks 并列题名：Research on risk monitoring and prevention mechanism of capital guarantee chain Research on the intergenerational transmission mechanism of property income gap and its changing trend Research on the occurrence and prevention mechanism of edible agro-products farmer's moral hazard behavior Research on the intergenerational transmission mechanism of poverty psychology and its intervention strategies research on the operating mechanism of local administrative organs