string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E5%85%B7%E4%BD%93%E5%B9%B2%E4%BB%80%E4%B9%88%E5%B7%A5%E4%BD%9C => Failed to connect to 14.18.117.71 port 38220: Connection refused"
一建机电具体干什么工作
