Which of the following is least likely an important requirement of good corporate governance （）

A. Members of the board should serve staggered, multiple-year terms.

B. A board should be composed of at least a majority of independent board members.

C. Board members should have appropriate experience and expertise relevant to the company’s business.

喹诺酮类药物的结构类型包括

A．萘啶羧酸类

B．吡啶并嘧啶羧酸类

C．喹啉羧酸类

D．乙二胺类

E．氨基醚类