string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%9B%E5%B7%9D%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E7%AD%94%E6%A1%88%E8%A7%A3%E6%9E%90 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
四川二级建造师答案解析
