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.

无盐培养基上不能生长的常见食物中毒致病菌是（）

A.沙门菌

B.副溶血弧菌

C.变形杆菌

D.大肠杆菌

E.葡萄球菌