美国政体实行议会君主制并贯彻分权和制衡原则。）
正确错误

A．Proof of a  clear link  between job satisfaction, worker motivation  and  business success
B．Concern for productivity and  efficiency
C．Awareness of the  many different variables that influence and  constrain  a  manager's behaviour
D．Awareness of the  importance of group dynamics and  worker attitudes as an  influence on productivity