中文摘要：

基于122家企业样本的研究,发现企业总经理与董事长两职分离有利于企业家导向和市场导向;总经理更替频率与企业家导向之间呈倒U关系,总经理的频繁更替不利于市场导向。

英文摘要：

Based on data from 122 companies,this paper finds that commitment to EO and MO is high when the board chairman and the general manager are different individuals.Furthermore,an inverted-U relationship exists between general manager turnover frequency and EO,and the frequent general manager turnover is negative with MO.