string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E6%B3%95%E8%A7%84%E5%BF%85%E5%A4%87%E8%80%83%E7%82%B9 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
一级建造师法规必备考点
