病历摘要:患者女,53岁,右眼渐进性视力下降三年,近一个月来几乎不见物,不伴有眼部红、痛与头痛症状,否认有眼外伤史,家族中无类似病史,否认有传染病与遗传病史。眼部检查:视力:右:0.02,左:0.3,右眼晶体呈明显混浊,眼底看不清,左眼晶体轻度混浊,眼底小瞳孔下看不太清楚。引起角膜损害的可能因素有哪些?() ["A.人工晶体的毒性反应","眼科手术所引起的创伤","患者角膜内皮细胞大量损失","患者身体素质太差","与遗传有关","术后炎症反应太重","术后用药不妥","心功能不全"]
男,45岁。不规则发热3个月。右肋下胀痛,颈部可见蜘蛛痣,肝肋下4cm,质硬,稍触痛,肝表面可闻及血管杂音,脾肋下1.5cm;白细胞5.0×109/L,中性粒细胞0.60,AFP<50μg/ml,SGPT60U,HBsAg(+)。最可能的诊断是()。 ["肝脓肿","肝硬化并肝癌","慢性活动性肝炎","肝炎后肝硬化","肝状核变性"]
抓铲挖土机适于开挖() ["山丘开挖","场地平整土方","水下土方","大型基础土方"]
一组小鼠的生存天数分别为2.9,1.4,0.7,8.4,10.2.其中位数为() ["2.9","1.4","0.7","8.4","10.2"]
下列类型中,哪一项为最常见的继发性肺结核() ["血行播散型肺结核","原发型肺结核","浸润型肺结核","慢性纤维空洞型肺结核","结核性胸膜炎"]
何谓鸡胸,对儿童发育有何不良影响?