丝虫病出现乳糜尿主要原因是() ["精索及睾丸淋巴管受阻塞","阻塞位于肠干淋巴管","阻塞位于腹主动脉侧淋巴结","阻塞位于腰干淋巴管","阻塞位于肾脏的淋巴结及其主干"]
环境污染急性危害的产生主要包括下列类型() ["大气污染的烟雾事件","事故性排放的环境污染事件","核泄漏事故","环境生物性污染引起的急性传染病","以上均是"]
破伤风典型症状中,通常最先受影响的肌群是() ["膈肌","咀嚼肌","背腹肌","面部表情肌"]
门静脉高压症的主要原因是()。 ["门静脉主干先天性畸形","肝静脉血栓形成、狭窄","肝段下腔静脉阻塞","肝硬化","各种原因致脾静脉血流量过大"]
诊断中度贫血,其血红蛋白值是() ["A.<30g\/L","B.30~60g\/L","C.60~90g\/L","D.90~110g\/L","E.90~120g\/L"]
核素心肌显像检查以()和()标记的放射性药物显像剂为最常用。