胃术后吻合口梗阻
A．呕吐物为食物，无胆汁B．呕吐物为胆汁，无食物C．呕吐物既有胆汁，又有食物D．呕吐物呈酸臭味，有宿食E．无呕吐
参考答案：A
The plan you have given us sounds good, but I am afraid it doesn’t seem very ________as far as this job is concerned.
A．total
B．normal
C．practical
D．mental
两根钢管的长分别是28米和42米，锯成同样长的小段并且不浪费，每一段钢管最长是______，共可以锯成______段．
