【单选题】. _________ is good for you going to bed early and getting up early.
【判断题】肝功能不全引起低钾血症的主要原因是醛固酮增加。
【单选题】电阻元件的伏安特性曲线不是一条直线,则该电阻称为( )。
【单选题】You’d better get up early.The early train is ________to leave at five in the morning. [ ]
【单选题】蒸发操作中消耗的热量主要用于三部分,除了( )