试题详情

220kV/330kV/500kV送电线路跨越弱电线路及电力线路时,其最小垂直距离为()。

A3.5m/4.5m/8m;

B4m/5m/8.5m;

C4.5m./5.5m/9m;

D5m/6m/9.5m。