How are you?[ ]
A. How are you?
B. Fine, thank you.
答案：B
排粪造影检查需拍摄排便的哪几个过程（）
A.静坐、提肛、强忍、力排、力排后
B.提肛、强忍、力排、力排后
C.静坐、提肛、强忍、力排
D.静坐、强忍、力排、力排后
E.静止相、力排相、排后相
什么叫煤气？
