You can help your mother_______the housework. [ ]
A. with
B. by
C. in
D. on
答案:A
Ⅱ型呼吸衰竭氧疗时适宜的吸氧浓度为
A.25%~34%
B.35%一40%
C.41%~45%
D.46%~50%
E.5%~60%
男性,10岁,低热伴右下肢痛,活动受限,跛行,右髋关节“4”字试验阳性,诊断考虑为()
A.颈椎结核
B.胸椎结核
C.腰椎结核
D.髋关节结核