头皮钢针属于国家第二类管理器械。
参考答案:错
It's necessary for us to know some ways of __________the building when there is a fire. [ ]
A. coming up with
B. living in
C. escaping from
D. getting along with
男,30岁,近2年来右膝疼痛,活动后加重,查体:右膝压痛明显,有波动感,皮肤稍显红肿,以髌骨部明显,结合图像,最可能的诊断是()
A.纤维性骨皮质缺损
B.非骨化性纤维瘤
C.骨囊肿
D.骨巨细胞瘤
E.动脉瘤样骨囊肿