桥式整流电路和单相半波整流电路相比,在变压器副边电压相同的情况下,()电路的输出电压平均值高了一倍。
How many men did the woman see in her front garden?She saw.
Why did she invite them in since she didn't know any of them?She did so.
What happened when the woman told her husband about the three old men?Her husband.