[问答题,简答题] 正常心电图波形特点与正常值

牛蒡子苷属于（） ["简单木脂素","单环氧木脂素","联苯环辛烯型木脂素","木脂内酯","新木脂素"] 和厚朴酚属于（） ["简单木脂素","单环氧木脂素","联苯环辛烯型木脂素","木脂内酯","新木脂素"] 五味子素的结构是（） ["['","","","",""] 分子中具有酚羟基是其反应阳性的必要条件（） ["Labat反应","异羟肟酸铁反应","Gibbs反应","Molish反应","盐酸-镁粉反应"] 作用于香豆素内酯部分的反应是（） ["Labat反应","异羟肟酸铁反应","Gibbs反应","Molish反应","盐酸-镁粉反应"] 正常心电图波形特点与正常值