string(328) "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%E4%BB%A5%E7%94%B1%E6%8A%98%E6%97%A7%E6%9D%A5%E8%A1%A5%E5%81%BF%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D => Failed to connect to 14.18.117.71 port 38133: Connection refused"
资本性支出可以由折旧来补偿是什么意思
