A.13.76kV
B.11.6kV
C.13.76∠56.96°kV
D.11.6∠30.45°kV
[问答题](本题满分10分)设方程确定曲线,求此曲线在点(0,1)处的曲率与曲率圆方程。
[单选题]图示电路中,电压源单独作用时,电流源端电压分量为( )。A.一B.C.0D.
[单选题]图示电路中,L=10H,。将电路开关K闭合后直至稳态,那么在这段时间内电阻上消耗的焦耳热为( )。题4图A.110JB.220JC.440JD.88
[问答题]____________.
[单选题]A.4.78B.35.83C.40.59D.45.61
[单选题]A.4.78B.35.83C.40.59D.45.61
[单选题]A.4.78B.35.83C.40.59D.45.61
[单选题]A.4.78B.35.83C.40.59D.45.61