冲击式涡轮基元级的反力度为()。
A、0
B、1
C、2
D、3
参考答案:A
排便后有鲜红色血液滴下,一般见于以下哪一部位出血
A.十二指肠B.小肠C.横结肠D.乙状结肠E.肛管
All of the doctors have worked for a long time, but ________ of them stop to have a rest.
A.none
B.nobody
C.neither
D.not