string(262) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%B1%B1%E4%B8%9C%E4%BA%8C%E5%BB%BA%E5%BB%BA%E7%AD%91%E5%AE%9E%E5%8A%A1%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2020山东二建建筑实务答案
