string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E7%9C%8B%E7%85%A4%E6%B0%94%E8%A1%A8%E8%AF%BB%E6%95%B0 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
如何看煤气表读数
