string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%B9%B4%E6%B6%88%E9%98%B2%E5%AE%89%E5%85%A8%E8%80%83%E8%AF%95%E9%A2%98 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
2020年消防安全考试题
