Would you please keep silent? The weather report ________  and I want to listen to it.

A．is broadcast

B．has been broadcast

C．is being broadcast

D．had been broadcast

变压器的参数分别反映了变压器的（）基本功率损耗。

A.铜损耗

B.漏磁损耗

C.铁损耗

D.励磁损耗