【判断题】诺顿定理的内容是:任何一个含独立源的线性二端网络,对其外电路而言, 可以用一个电流源和电阻的串联组合来等效置换;电流源的电流 等于端口处短路时的 短路电流I sc , 而电阻等于二端网络内全部独立源置零后的端口等效电阻 R 0 。
【单选题】对于恒流源,当其短路时,该恒流源内部电路( )
【单选题】What suggestion is made about the former purpose of the various ruins he could see?
A.
They had formed part of the capital of a new Mayan kingdom.
B.
They were what remained of a temple to sky gods.
C.
They were what was left of the starting point from which the Mayans had moved to new territory.
D.
They were what remained of the farthest city reached in a large-scale Mayan migration.
【单选题】What suggestion is made about the former purpose of the various ruins he could see?
A.
they had formed part of the capital of a new Mayan kingdom.
B.
They were what remained of a temple to sky gods.
C.
They Were what was left of the starting point from which the Mayans had moved to new territory.
D.
They were what remained of the farthest city reached in a large-scale Mayan migration.
【判断题】题目:得失电子产生电流的反应称为化学反应,在有水或处于熔融状态的介质中发生。
【单选题】(3)应用戴维南定理时、求解与电压源串联的端口等效电阻时将一端口内部独立电源全部置零,其中理想电流源置零是指电压源应该()。