多项选择题
A.一相触电 B.两相触电 C.跨步电压触电 D.高压触电
A.49.3~49.5 B.49.1~49.2 C.48.9~49.0 D.49.2~49.3
A.1.2 B.1.15 C.1.1 D.1.25