单项选择题
A.0.5m B.0.8m C.1.0m D.1.5m
A.8m B.10m C.12m D.5m
A.8m B.10m C.12m D.15m
(A)决定杆塔承受的水平荷载的档距 (B)决定杆塔承受风压的档距 (C)决定杆塔承受导、地线自重、冰重的档距
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