BPCU的功用是：（）
A、监控直流汇流条电压、电流
B、电源转换功能
C、监控GPU，防止反极性、过压
D、以上答案均正确
参考答案：D
He was watching her doing it with a _________ look on his face, as if to say that he would not change his mind.
A．determining
B．determined
C．surprising
D．surprised
加油站无需张贴的图标是
