吸气时出现三凹征最常见于() ["A.阻塞性肺气肿","B.上呼吸道阻塞","C.支气管哮喘","D.大量胸腔积液","E.一侧全肺不张"]
有关痔的叙述,正确的是()。 ["静脉曲张是痔的病因","Ⅱ度、Ⅲ度内痔易与直肠黏膜脱垂混淆","指诊的主要目的是了解内痔的发病情况","便血是混合痔最常见的症状","门脉高压患者,痔的发病率高"]
患者女,56岁,发现左侧乳腺肿块2d,不痛,不发热。查体:左乳腺肿块,直径约3cm,质硬,不易活动,皮肤有凹陷。同侧腋窝淋巴结增大。本例的诊断应首先考虑() ["A.乳腺增生","乳腺囊肿","乳腺纤维腺瘤","乳腺癌","乳腺错构瘤"]
普通血气分析仪中包含的电极是() ["银电极","pH电极","PCO2电极","PO2电极","参比电极"]
属于腹膜后隙内的器官是()。 ["肾","十二指肠","胰","脾","直肠"]
卫生技术评估的内容包括:()、()、()和()。