—How was the  party last night?

—Great! I     a good time and met some very nice people.[ ]

A. have                      

B. will have

C. had                      

D. am having

客车播音系统的扬声器均并联在播音主线上，每个扬声器上还（）一个阻值与其阻抗相同的电阻。

A.串联

B.并联

C.串联或并联

D.不确定