检查胸膜腔闭式引流是否通畅，最简便的方法是（）

A.引流管有无受压

B.引流管是否过长

C.引流管有无扭曲

D.引流管是否滑脱

E.水封瓶内长玻璃管的水柱有无波动

The nurse instructs the client with hemorrhoids about how to decrease the discomfort. Which of the following interventions would be most likely recommended by the nurse（）

A. Decrease fiber in the diet.

B. Decrease physical activity.

C. Take laxatives to promote bowel movements.

D. Use warm sitz baths.