单项选择题
A.35KV B.63KV C.110KV D.330KV
A.1/4 B.1/5 C.1/6 D.1/7
A.1 B.1.5 C.2 D.5
A.倾斜倒杆 B.松动损坏 C.相间短路 D.生锈
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