He often eats [ ]
A. outside
B. in outside
C. in home
D. at outside
答案:A
急性腹膜炎所致呕吐属于()。
A.神经性呕吐
B.反射性呕吐
C.中枢性呕吐
D.胃肠源性呕吐
E.周围性呕吐
出现锅炉“满水”时应停止送气,并()。
A.立即停炉
B.进行上排污
C.进行下排污
D.B或C