我国饮用水汞的极限标准为()。 ["1mg\/L","0.1mg\/L","0.01mg\/L","0.001mg\/L"]
肺癌最常见的症状为() ["咳嗽","血痰","胸痛","发热","气短及胸闷"]
有关电路过渡过程论述正确的是()。 ["过渡过程只发生在直流回路","产生过渡过程的原因是有储能元件的存在","电阻不是储能元件","电感电流不能突变","电容电压不能突变"]
食物的氧热价是指() ["1g食物氧化时所释放的能量","1g食物燃烧时所释放的能量","食物氧化消耗1L氧时所释放的能量","氧化1g食物,消耗1L氧时所释放的能量","1g食物所含的能量"]
心悸,伴口燥咽干,失眠烦热,舌红少苔,属于()。 ["心血虚证","痰蒙心神证","痰火扰神证","心阴虚证","心火亢盛证"]
什么是“阴阳消长”?