男,16岁,左大腿肿痛2个月余,X线摄片示左股骨下端溶骨性破坏,边界模糊,可见"骨膜三角"征。该患者应诊断为() ["骨髓炎","骨结核","骨梅毒","骨肉瘤","骨软骨瘤"]
旋毛虫病患者水肿的特点是() ["发生在双下肢","约80%的病人出现","进展迅速","持续2周左右","发生在眼睑、颜面、眼结膜"]
糖尿病的主要慢性并发症是:() ["大中动脉硬化","视网膜病变","肾小球硬化","植物神经损害","酮症酸中毒"]
H1受体阻断药对哪种病最有效() ["支气管哮喘","皮肤黏膜过敏症状","血清病高热","过敏性休克","过敏性紫癜"]
重症肌无力患者出现危象的主要表现是()。 ["眼睑下垂加重","吞咽困难加重","构音障碍加重","呼吸肌无力","四肢无力加重"]
确定精炼顶渣化学成分的原则是什么?