string(247) "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%B8%88%E5%8E%86%E5%B9%B4%E7%9C%9F%E9%A2%98 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
一级消防师历年真题
