【简答题】In fact,most of what people retain is substitutable, so dispose the things that aredisposable.
【判断题】电阻的倒数叫做电导,电导值越大,导电性越高。( )
【单选题】方向不变,大小随时间有脉动变化的电流叫做()。
【简答题】电阻的倒数叫做____,用符号____表示。
【单选题】In fact,most of us would the consequences of stupid decisions taken by others.