高管任职年限对中国民营矿业企业经营效率的影响研究
郑明贵,吴萍

Research on the Impact of Senior Executives’ Tenure on the Operating Efficiency of Private Mining Enterprises in China
Minggui ZHENG,Ping WU
图1 2013~2018年中国民营矿业上市企业整体经营效率变动趋势
Fig.1 Change trend of overall operating efficiency of listed private mining enterprises in China from 2013 to 2018