string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%B0%91%E8%88%AA%E8%80%83%E8%AF%95%E5%A4%A7%E7%BA%B2 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
一建民航考试大纲
