Which of the following characteristics is least likely required to ensure that a company’s Board of Directors Audit Committee is adequately representing shareowner interests（）
A. Any conflicts between the external auditor and the firm are resolved in a manner that favors shareholders.
B. The shareholders vote on whether to approve of the board’s selection of the external auditor.
C. The committee regularly reviews the performance, independence, skills, and experience of existing board members.
参考答案：C
解析：
Regularly reviewing performance, independence, skills, and experience of existing board members is a characteristic of the Remunerations/Compensation Committee, not the Audit Committee . All other choices are positive characteristics of the Audit Committee.
/m，以导线框两条对角线交点O为圆心，半径r＝0.5m的匀强磁场区域的磁感应强度为B＝0.5T，方向垂直纸面向里且垂直于导线框所在平面，金属棒MN与导线框接触良好且与对角线AC平行放置于导线框上。若棒以v＝4m/s的速度沿垂直于AC方向向右匀速运动，当运动至AC位置时，求（计算结果保留二位有效数字）：