【单选题】运行MATLAB软件,首先展现的是MATLAB主窗口,而它其中用于输入命令并显示图像以外的所有执行结果的主要交互窗口是( )。
【简答题】MATLAB 的 窗口用于输入命令并显示除图形以外的所有执行结果
【单选题】在不能利用自然导体的情况下,保护零线导电能力最好不低于相线的[]。
【判断题】The term voltage is commonly used to indicate a difference in potential but electromotive force is not.
【判断题】Electromotive force (EMF) is measured in volts .
【判断题】在不能利用自然导体的情况下,保护零线导电能力最好不低于相线的二分之一.
【简答题】( ): Electromotive force or potential difference, usually expressed in volts.
【单选题】Which of the following can NOT be regarded as an external electromotive force (emf)?