string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E4%BC%9A%E8%AE%A1%E6%9C%80%E5%90%8E%E4%B8%89%E7%AB%A0%E5%8F%AF%E4%BB%A5%E6%94%BE%E5%BC%83%E5%90%97 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
注会会计最后三章可以放弃吗
