普鲁卡因水溶液的不稳定性是因为下列哪种结构易被氧化() ["A．酯键","B．苯胺基","C．二乙胺","D．N-乙基","E．苯基"]
诊断早期听神经瘤的最佳检查方法为() ["A．X线平片","B．磁共振(MRI)检查","C．CT检查","D．超声检查","E．桥小脑池空气造影"]
下列降压药最易引起直立性低血压的是（） ["利血平","甲基多巴","胍乙啶","氢氯噻嗪","可乐定"]
在CT、MRI扫描中"视神经胶质瘤"最具特征影像表现为() ["A．视神经梭形、椭圆形肿大","B．可侵犯视乳头","C．瘤内无钙化","D．视神经管扩大","E．瘤周有液体聚集"]
降低肺动脉压力()关闭动脉导管()开放动脉导管() ["A．蚓哚美辛","B．NO吸入","C．前列腺素","D．卡托普利","E．地高辛"]
新生儿呼吸窘迫综合征的病因是()湿肺的病因是()膈疝患儿呼吸窘迫的病因是()
