string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%8F%AB%E5%81%9A%E8%B5%84%E6%9C%AC%E6%80%A7%E6%94%AF%E5%87%BA%E5%92%8C%E6%94%B6%E5%85%A5 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
什么叫做资本性支出和收入
