沸腾炉布置在悬浮段的受热面称为埋管。
参考答案:错
Which library did you ________ these books from?
A. get
B. buy
C. borrow
D. lend
食管癌切除术后出现吻合口瘘多在术后()
A.1~3天
B.4~8天
C.5~10天
D.8~14天
E.10~20天