正常细胞膜内K+浓度约为膜外K+浓度的()。 ["12倍","30倍","50倍","80倍","90倍"]
产于山东的道地药材是() ["党参","阿胶","人参","乌头","菊花"]
某肺炎患者,痰培养结果为MSSA(甲氧西林敏感的金黄色葡萄球菌),首选() ["红霉素","氨苄青霉素","氧氟沙星","氧哌嗪青霉素","万古霉素"]
患者女性,65岁。无烟酒嗜好,拟行胆囊摘除+胆总管探查术。为进一步了解心脏功能下列哪一项检查最必要() ["A.生化全套","B.血气分析","C.肝功能","D.心功能","E.肾功能"]
上皮细胞间失去了连接,属于自身免疫病的疾病是() ["类天疱疮","多形红斑","红斑狼疮","天疱疮","白塞病"]
婴儿痉挛症的发病年龄为(),典型脑电图表现为()。