【多选题】情况危急需要带电灭火,下列可以选用的是?
【判断题】习惯上规定电压的实际方向是从高电位端指向低电位端与电动势的实际方向相同。A. √ B. ×
【多选题】情况危急需要带电灭火,下列可以选用的是?
【单选题】---The animated film Ne Zha is a big winner in box office. How do you find it? -_______. I can’t think too highly of it.
【判断题】电动势的方向与电源两端电压的实际方向相同。( )
【单选题】---The animated film Ne Zha is a big winner in box office. How do you find it? -_______. I can’t think too highly of it.
【判断题】习惯上规定电压的实际方向是从高电位端指向低电位端与电动势的实际方向相同。