女性,54岁,1天前突发神志不清,右侧肢体活动障碍。头颅CT示脑出血。1小时前出现呕血,量约50ml,查体;肝脾无肿大。引起呕血最可能的病因是() ["胃癌","急性胃黏膜病变","消化性溃疡","食管胃底静脉曲张","食管贲门黏膜撕裂"]
再次免疫应答的显著特点下列哪项是错误的 ["A.诱导潜伏期长","B.抗体维持时间长","C.抗体滴度高","D.优势抗体为IgG","E.优势抗体为IgA"]
胃溃疡患者可能的并发症不包括() ["出血","穿孔","幽门梗阻","恶性贫血","癌变"]
岩溶漏斗扩大或合并就形成(),面积小于10平方公里,具有封闭性。
女性,56岁,慢性肝炎病史20年患者,双上肢皮肤可见小动脉末端分支性扩张形成的血管痣,大小约2cm,应诊断为() ["紫癜","瘀点","蜘蛛痣","玫瑰疹","充血性皮疹"]
石芽与溶沟