无论在变压器投入运行的过程中，还是在停用的过程中，均应先接通各侧中性点接地隔离开关。
参考答案：对
I bought a dress for only 10 dollars in a sale; it was a real ______.[ ]
A. exchange
B. bargain
C. trade
D. business
攒动cuán dònɡ
