string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A0%94%E5%8F%91%E6%94%AF%E5%87%BA%E4%B8%8D%E5%BD%B1%E5%93%8D%E4%BC%9A%E8%AE%A1%E5%88%A9%E6%B6%A6%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
研发支出不影响会计利润吗
