Managers in excellent companies have a strong ________ for doing things rather than talking about

situations. [      ]

A. opinion  

B. feeling

C. idea  

D. preference

当发现尿液中有蛋白质和血细胞时，可能发生病变的部位是（　　）

A．肾小囊

B．肾小球

C．肾小管

D．收集管