string(285) "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%E6%99%BA%E8%83%BD%E7%94%B5%E8%A1%A8%E8%AF%BB%E6%95%B0%E6%98%AF%E5%90%A6%E5%87%86%E7%A1%AE => Failed to connect to 101.89.117.144 port 38208: Connection refused"
如何看智能电表读数是否准确
