string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%B8%80%E5%BB%BA%E6%B3%95%E8%A7%84%E9%9A%BE%E6%98%93%E7%A8%8B%E5%BA%A6 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
2020一建法规难易程度
