上消化道出血不包括出血的部位是 （）
A.胰腺
B.肝、胆
C.十二指肠
D.食管
E.口腔
参考答案：E
—What's wrong with you?
— I feel _____. I heard a _____ noise just now. [ ]
A. frightening, frightened
B. frightening, frightening
C. frightened, frightening
D. frightened, frightened
浓缩法主要是用于降低污泥中的（）
A.空隙水
B.毛细水
C.表面吸附水
D.内部水
