腰椎间盘突出症，最常见的临床症状是（）。
A.伸腰痛
B.腰部活动受限
C.弯腰痛
D.腰腿痛
E.久坐腰痛加重
参考答案：D
The client with a total laryngectomy receives tube feedings to meet his fluid and nutrition needs. The nurse explains to the client that the purpose of the tube feedings is to
A. prevent pain from swallowing.B. prevent fistula development.C. ensure adequate intake.D. allow for adequate suture line healin
关于乳牙髓腔特征描述错误的是（）
A.髓室大
B.根管粗
C.根尖孔小
D.髓室顶高
E.髓室壁薄
