灰尘细胞是下列何种脱落细胞学涂片的标志物（） ["痰液","胸腔积液","腹腔积液","尿液","胃液"]
根面龋中最常分离到的细菌是（） ["乳杆菌","血链球菌","变形链球菌","放线菌","牙龈卟啉单胞菌"]
射精后精子在酸性阴道环境内存活的时间是（） ["6h","48h","24h","3天","3～5天"]
晕厥常发生于以下哪种瓣膜病变（）。 ["二尖瓣狭窄","主动脉瓣狭窄","二尖瓣关闭不全","主动脉瓣关闭不全","三尖瓣关闭不全"]
肝外梗阻性黄疸可能为（）。 ["胆管结石","胰腺癌","壶腹癌","慢性胰腺炎","十二指肠乳头肿瘤"]
简述癫痫药物治疗的基本原则。
