string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E7%AD%91%E4%B8%B4%E6%97%B6%E6%B6%88%E9%98%B2%E7%AE%A1%E7%9B%B4%E5%BE%84%E8%A6%81%E6%B1%82 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
建筑临时消防管直径要求
