长期服用噻嗪类利尿剂的慢性心功能不全患者，最常出现的不良反应是() ["A．低钾血症","B．高镁血症","C．低钠血症","D．脱水症","E．氮血症"] 急性肺水肿患者吸氧时在湿化瓶中加乙醇(酒精)，其目的是() ["A．增强痰液的稀释作用","B．扩张肺泡毛细血管床","C．抑制肺泡内细菌生长","D．降低肺泡表面张力","E．兴奋呼吸中枢"] 下列各项中不属洋地黄中毒表现的是() ["A．恶心呕吐","B．室性早搏","C．心律不齐","D．色视幻觉","E．震颤抽搐"] 右心衰竭的主要表现有() ["A．心悸","B．发绀","C．胸闷、气促、呼吸困难","D．下肢水肿、颈静脉回流征呈阳性","E．咳嗽、咯血"] 左心功能不全的主要症状为() ["A．肝大","B．咳嗽、咳痰","C．少尿","D．呼吸困难","E．颈静脉怒张"] 体力活动明显受限，平时一般活动可引起呼吸困难的为()