the head of的意思是什么

造句：

1. The head of a functional department should not only obey the deputy leader in charge, but also obey the command and order of the principal In order to find a balance between the chief and deputy posts, we usually have to resort to both ways.

2. 一个职能部门的负责人,既要服从分管的副职领导,更要听从正职的指挥和命令,于是,为了使其能够在正副职间寻求平衡,通常不得不采取左右逢源的手段。

3. No one expected that the handsome young man in front of him was the general director of the project.

   谁也没想到眼前这个长得五大三粗的小伙子就是工程总负责人。