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[单选题]
拉线与电杆夹角宜取(),如受地形限制,可适当减小但不应小于30°。
A.35°
B.45°
C.50°
D.60°
查看答案
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A.35°
B.45°
C.50°
D.60°
A.架空线应设在专用电杆上,严禁架设在树木、脚手架上
B.架空线必须采用绝缘导线
C.因受地形环境限制不能装设拉线时,宜采用撑杆代替拉线,撑杆埋深不应小于0.8m
D.拉线宜用镀锌铁线,其截面不应小于3×Φ4.0
E.接户线在档距内不应有接头,进线处离地高度不应小于5m