肠梗阻可见腹痛，并伴有（）
A.急性发热
B.黄疸
C.呕吐
D.腹泻
E.血便
参考答案：C
选择与画线部分意思相同或相近的选项。
The teacher gave out the books to the students. [ ]
A. gave up
B. gave back
C. handed out
D. gave in
体积修正系数是用标准密度查"石油计量表"，中的体积修正系数表得到
