string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%85%A4%E6%B0%94%E8%A1%A8%E6%80%8E%E4%B9%88%E7%9C%8B%E4%BD%99%E9%87%8F => Failed to connect to 101.89.143.195 port 38175: Connection refused"
煤气表怎么看余量
