已知无源二端网络如图所示,输入电压和电流为:U(t)=220(来学网)sin(314t+30°)(V),I(t)=4sin(314t-25°)(A),则该网络消耗的电功率为:
  • A.
    (来学网)721W
  • B.
    (来学网)880W
  • C.
    (来学网)505W
  • D.
    (来学网)850W