—What do you think of the manager of your company?

—Oh，he is ________ manager who's pleasant to work with.It's ________ pleasure to work with him.

A．the；a

B．a；a

C．a；the

D．/；a

“明确每个人的职责，职位设计和权限委授要合理，奖惩要分明、公正而及时”是（ ）的主要内容。

A．责任原理

B．伦理原理

C．效益原理

D．系统原理