基金管理人选择进行披露信息的报刊在多长时间内不得更换。（）
A．6个月
B．1个会计年度
C．2个会计年度
D．3个会计年度
参考答案：B
Which of the following policy tools is least frequently used by the U. S. Federal Reserve（）
A. Changing the discount rate.
B. Engaging in open market operations.
C. Changing bank reserve requirements.
少耕法
