通讯线对地短路 100%
https://qc.dianpusou.com/tag/%e4%b8%89%e8%bd%ae%e6%91%a9%e6%89%98%e8%bd%a6%e9%a9%be%e9%a9%b6%e8%af%81%e4%bb%b7%e6%a0%bc
通讯线对地短路 100%
https://qc.dianpusou.com/tag/%e4%b8%89%e8%bd%ae%e6%91%a9%e6%89%98%e8%bd%a6%e9%a9%be%e9%a9%b6%e8%af%81%e4%bb%b7%e6%a0%bc