You have recently taken over a new project when the previous project manager resigned. While studying the project information, you find out that cost variances are very severe. To provide a realistic basis for performance measurement, you should recommend （）.

A．issuing budget updates

B．revising the cost baseline

C．corrective action adjusting schedule activity budgets

D．closing the project

腹股沟管管壁的正确描述是（）

A．位于腹股沟韧带内侧半上方

B．内口称深环，由腹横筋膜构成

C．外口为浅环，由腹外斜肌腱膜构成

D．女性有子宫圆韧带穿过

E．病理情况下，腹腔内容物可由此处膨出形成腹股沟疝