头痛伴喷射性呕吐的疾病是（）.
A.胃潴留
B.颅内高压
C.急性胃炎
D.急性腹膜炎
E.幽门梗阻
参考答案：B
Our country has changed a lot over the years. And every Chinese our mother land. [ ]
A. are proud of
B. is proud of
C. takes proud in
D. take proud in
平原区确定入渗系数的常用方法有哪几种？各方法的使用条件是什么？
