string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9C%9F%E5%BB%BA%E4%B8%93%E4%B8%9A%E5%B8%B8%E8%A7%81%E9%9D%A2%E8%AF%95%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
土建专业常见面试问题
