string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%8A%E5%B9%B4%E6%B6%88%E9%98%B2%E5%B7%A5%E7%A8%8B%E5%B8%88%E8%80%83%E8%AF%95%E9%9A%BE%E5%BA%A6%E5%A4%A7%E5%90%97 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
今年消防工程师考试难度大吗
