string(294) "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%E5%B7%A5%E7%A8%8B%E5%B8%88%E7%BB%BC%E5%90%88%E8%83%BD%E5%8A%9B%E7%9F%A5%E8%AF%86%E7%82%B9%E5%BD%92%E7%BA%B3 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
消防工程师综合能力知识点归纳
