Theoretical and empirical study of professional manager market in China 并列题名:Theoretical and empirical study of professional manager market in China a theoretical and empirical study of food safety regulation in China Theoretical and empirical study on the operation of urban public service in China theoretical and empirical study based on Chinese market Theoretical and empirical study on financing preference of listed companies in China Theoretical and empirical study on marine fishery production in China theoretical and empirical study of the Pearl River Delta region 并列题名:Theoretical and empirical study on the operation of urban public service in China Theoretical and empirical study of teachers' sense of gain