string(266) "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%E6%95%99%E6%9D%90%E5%B1%9E%E4%BA%8E%E6%B6%88%E9%98%B2%E8%AE%BE%E6%96%BD%E5%90%97 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
消防教材属于消防设施吗
