若线路导线的自重比载为32.33×10-3N/(m·mm2),高温时的应力为52N/mm2,操作过电压工况时的应力为60N/mm2,某塔的水平档距为400m,高温时垂直档距为300m,则该塔操作过电压工况时的垂直档距为多少米?()
A.450m B.400m C.300m D.288m正确答案D
若线路导线的自重比载为32.33×10-3N/(m·mm2),高温时的应力为52N/mm2,操作过电压工况时的应力为60N/mm2,某塔的水平档距为400m,高温时垂直档距为300m,则该塔操作过电压工况时的垂直档距为多少米?()
A.450m B.400m C.300m D.288m正确答案D