基础强度达到设计的()时,可加上全部负荷。
A.70%
B.80%
C.90%
D.100%
参考答案:D
______ in Shanghai for more than ten years, he know the city very well.
A.Living
B.Having lived
C.Lived
D.Having been lived
男性,26岁,间断下腰背痛5年,左膝关节肿痛1年。体检:左膝关节肿胀压痛,浮髌试验(-),双侧"4"字征(+),枕墙距15cm。
辅助检查示HLA-B27阳性,骶髂关节CT示骨质硬化,关节间隙变窄,关节面毛糙,可见骨质破坏,关节面可见囊状破坏。定位像示腰椎呈"竹节"样改变。该患者诊断考虑()
A.类风湿关节炎
B.骨关节炎
C.强直性脊柱炎
D.痛风
E.脊柱结核