下列哪种情况不宜做支气管造影

A．术前明确支气管扩张部位和范围

B．反复大咯血，胸片未见明显病变

C．病变位于左下肺反复感染不易控制

D．病变较重累及双侧肺

E．病变重且局限于右中下肺

Which one of the following independent situations would most likely be of the greatest concern to an investor when reviewing a potential investment’s corporate governance practices and policies（）

A. Without obtaining prior management approval, the board hired external consultants to advise them about recent environmental legislative changes related to the company.

B. As part of his compensation package, one director received a bonus for identifying a potential merger candidate. The company is currently negotiating a merger with that company.

C. One of the directors is the president of a major supplier to the company, but he recuses himself from board decisions related to the products his company supplies.