string(260) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E6%B3%A8%E4%BC%9A%E6%88%98%E7%95%A5%E8%80%83%E7%94%9F%E5%9B%9E%E5%BF%86%E7%AD%94%E6%A1%88 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
2021注会战略考生回忆答案
