string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%B4%A2%E5%8A%A1%E4%BC%9A%E8%AE%A1%E6%95%99%E6%9D%90%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
财务会计教材答案
