—_____ do you want to go to the movie?
—On Sunday. [ ]
A. What
B. How
C. Why
D. When
答案:D
以下哪种临床表现是腰椎管狭窄的特征()
A.腰痛
B.下肢痛
C.间歇性跛行
D.下肢麻木
E.足痛
电除尘修后恢复运行前的检查项目有哪些?