string(275) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%B5%84%E6%9C%AC%E6%80%A7%E6%94%AF%E5%87%BA%E5%8F%AF%E7%94%B1%E6%8A%98%E6%97%A7%E6%9D%A5%E8%A1%A5%E5%81%BF => Failed to connect to 101.91.112.32 port 38162: Connection refused"
资本性支出可由折旧来补偿
