左心室流入和流出道的分界是() ["三尖瓣前尖(瓣)","二尖瓣前尖(瓣)","主动脉瓣","三尖瓣后尖(瓣)","二尖瓣后尖(瓣)"]
排卵多发生在下次月经来潮前() ["10日","12日","14日","16日","以上都不对"]
肺炎合并感染性休克最常见的致病微生物是() ["A.肺炎球菌","B.克雷白杆菌","C.支原体","D.病毒","E.革兰阴性杆菌"]
下列哪项符合排尿性晕厥()。 ["在排尿或排尿结束时发作,持续1~2分钟","多见于年轻女性","不能自行苏醒","伴有血压升高","有后遗症"]
有关前列腺,哪项正确() ["为一成对的实质性器官","前列腺体的前面有一前列腺沟","经直肠可触及","呈栗子形、尖朝上底朝下","一般分为3叶"]
环境污染健康经济损失评价有哪些指标,各有哪些特点?