1.as compared with underground cables, what are the advantages of using overhead power line?
2.why are overhead power lines not used in densely populated areas?
*****give me short answers please******
*****both Chinese & English are acceptable*****
about overhead power line 20pt
2009-02-01 8:24 pm
回答 (1)
2009-02-02 12:57 am
✔ 最佳答案
1.不用掘開地面作維修，此舉不會影響到交通。因用高壓傳送，電流會比較細，相對導體面積不用太大。
2.在高壓area行過好易會觸電，還有磁場會影響人的健康(如癌症)。
參考: MYSELF^^
收錄日期: 2021-04-13 16:24:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090201000051KK00683