A、<span style=";font-family:宋体;font-size:16px">最大的负荷电流</span>
B、<span style=";font-family:宋体;font-size:16px">最大的短路电流</span>
C、<span style=";font-family:宋体;font-size:16px">最小的短路电流</span>
D、<span style=";font-family:宋体;font-size:16px">最大的故障电流</span>