string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E8%AE%BE%E6%B3%95%E8%A7%84%E6%9C%BA%E8%80%83%E9%A2%98%E5%BA%93%E5%8F%8A%E7%AD%94%E6%A1%883968 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
建设法规机考题库及答案3968
