男性,26岁,因肛旁脓肿,在肛周形成伤口,局部流脓不断,人院后检查,肛旁伤口为外口,内与直肠相通,此病理管道为
A.溃疡
B.瘘管
C.窦道
D.空洞
E.糜烂
参考答案:B
It was an _______ day today, so he got up much earlier than _______. [ ]
A. unusual; usual
B. usual; unusual
C. unusual; unusual
D. usual; usual
在分析测定中,测定的精密度越高,则分析结果的准确度越高。