string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%B9%B4%E4%BA%8C%E5%BB%BA%E6%B3%95%E8%A7%84%E7%9F%A5%E8%AF%86%E7%82%B9 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
2020年二建法规知识点
