string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2022%E4%BA%8C%E5%BB%BA%E6%95%99%E6%9D%90%E4%BB%80%E4%B9%88%E6%97%B6%E5%80%99%E5%87%BA%E4%B9%A6%E5%95%8A => Failed to connect to 61.171.74.35 port 38041: Connection refused"
2022二建教材什么时候出书啊
