A.3.5 B.4.5 C.5~6 D.10
A.内部过电压 B.工频过电压 C.大气过电压 D.谐振过电压
(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
A.2.5 B.2.3 C.2.1 D.2.0
A.0.7 B.0.8 C.0.9 D.1.0