string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B6%88%E9%98%B2%E4%B8%AD%E6%8E%A7%E8%80%83%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
消防中控考题及答案
