[名词解释] 拮抗作用

首关效应 治疗心衰时，洋地黄化后多少时间开始给予维持量() ["A．2小时","B．4小时","C．8小时","D．12小时","E．24小时"] 助溶剂 心衰患者应限制入液量，每日总量宜控制在() ["A．60ml/kg以内","B．80ml/kg以内","C．90ml/kg以内","D．100ml/kg以内","E．110ml/kg以内"] MIC 拮抗作用