下列哪种是社区获得性肺炎最常见的致病菌() ["肺炎球菌","肺炎克雷伯杆菌","流感嗜血杆菌","绿脓杆菌","葡萄球菌"]
下列哪种类型的疝必须急诊手术() ["易复性疝","难复性疝","股疝","绞窄性疝","滑动性疝"]
肺孢子菌肺炎治疗应首选() ["卡泊芬净","克林霉素","氨苯砜","复方新诺明","氯霉素"]
男性,31岁,发作性头痛、心悸伴大汗3次就诊。发病时体检:血压190/130mmHg,心率140次/min,面色苍白,数分钟可缓解,继而出现面色潮红。患者可能有下列哪些表现()。 ["A.体重增加","糖耐量增高","发热","血游离脂肪酸增高","低血钙","低血钾"]
椎管内肿瘤最常见的发病部位是()。 ["颈段","胸段","腰段","骶段","尾段"]
三相闸刀开关垂直安装时,电源端应在()方,负载端应在()方。