Most of the switches you use to control the electrical power system are on the electrical system control panel.
大多数用来控制电力系统的开关都在电力系统控制面板上。
A.You can use most of the switches to control the electrical power system. B.You Can find most of the switches that you use to control the electrical power system on the electrical system control panel. C.There are some switches for electrical power system on the electrical system control panel.正确答案B
