In addition, the relationship between R & D intensity and strategies is also analyzed in the enterprises guided by top manager with different academic degree and different position time. We find that different connections appear in these enterprises. 此外,本文还对不同学历和不同任职年限的企业RD投入强度与策略变量之间的关系进行了研究,发现企业的RD投入强度在不同高层管理者的影响下也呈现不同的变化。