【单选题】关于运算符的运算规则,错误的说法是
D.
echo ++$a 与echo $a++运算结果完全相同
【简答题】Use the mesh-current method to determine the power in the 1Ω resistor.
【简答题】Use the mesh-current method to find the current i_o in the circuit shown.
【简答题】逻辑与运算的运算规则是:有0出( ),全1出( )。
【简答题】Use the mesh-current method to find the power developed by the 3A source.
【多选题】How to deal with current sources when using mesh analysis?
A.
Case1: When a current source exists only in one mesh,we set the mesh current according to the value of the current source.
B.
Case 2: When a current source exists between two meshes, we create a supermesh by excluding the current source and any elements connected in series with it.
【判断题】对选项重要性进行排序,通过编码将这种顺序性的选择转化为阿拉伯数学()