string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E7%BA%A7%E6%B6%88%E9%98%B2%E5%92%8C%E4%BA%8C%E7%BA%A7%E6%B6%88%E9%98%B2%E6%95%99%E6%9D%90%E4%B8%80%E6%A0%B7%E5%90%97 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
一级消防和二级消防教材一样吗
