Research on the risk sharing mechanism of public-private partnership in public goods supplying 并列题名：Research on the risk sharing mechanism of public-private partnership in public goods supplying Research on the governance mechanism of public-private partnership mode urban rail transit project Research on the rule of law of public-private partnership in vocational education Research on legislation of public-private partnership in China 并列题名：Research on the rule of law of public-private partnership in vocational education Research on the legal nature of public private partnership contract Empirical research on the legal mechanism and dispute resolution of public-private partnerships in public utilities Competition promotion of public-private partnerships in public utilities 并列题名：Competition promotion of public-private partnerships in public utilities