并列题名：Application research of the public-private par tnerships (PPP) in transpor tation industry Application research of the public-private par tnerships (PPP) in transpor tation industry 并列题名：Competition promotion of public-private partnerships in public utilities 并列题名：Typical cases of public-private partnership projects in China 并列题名：Application research of the art of war strategy theory in policing-operation