string(235) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E5%B9%B4%E4%BA%8C%E5%BB%BA%E8%80%83%E8%AF%95%E6%9D%A1%E4%BB%B6 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2020年二建考试条件
