string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%9B%E5%B7%9D2020%E4%BA%8C%E5%BB%BA%E7%9C%9F%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88%E8%A7%A3%E6%9E%90 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
四川2020二建真题及答案解析
