string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%BA%8C%E5%BB%BA%E8%80%83%E8%AF%95%E5%90%84%E7%9C%81%E8%AF%95%E9%A2%98%E4%B8%80%E6%A0%B7%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
2020二建考试各省试题一样吗
