喉癌颈淋巴结转移最常见的部位是（） ["颈深上淋巴结","气管前淋巴结","颌下淋巴结","颈动脉三角区淋巴结","舌骨下淋巴结"]
亚急性感染性心内膜炎赘生物常位于（） ["二尖瓣关闭不全的瓣叶心室面","主动脉瓣关闭不全的瓣叶心室面","室间隔缺损的间隔右室面","二尖瓣关闭不全的瓣叶心房面","主动脉瓣关闭不全的瓣叶主动脉面"]
声门上型喉癌早期的常见症状是（） ["声嘶","喉阻塞","吞咽困难","咽喉疼痛","咽异物感"]
确诊喉部肿物的方法有（） ["纤维喉镜检查","CT检查","病理检查","MRI检查","间接喉镜检查"]
极重型哮喘发作的少见征象包括（） ["意识障碍","纵隔积气或气胸","动脉PCO2＞40mmHg","奇脉＞20mmHg","哮鸣音减弱或消失"]
HBV复制的指标是（）对HBV感染已获保护性免疫的指标是（）
