string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%B8%82%E6%94%BF%E9%9A%BE%E6%98%93%E7%A8%8B%E5%BA%A6%E8%A7%84%E5%BE%8B => Failed to connect to 101.91.112.32 port 38162: Connection refused"
二建市政难易程度规律
