问题
[A] variation [B] balance [C] frequency [D] stability
[A] variation
[B] balance
[C] frequency
[D] stability
Fatal error: Uncaught [XSException] ../../../usr/local/xunsearch/sdk/php/lib/XS.php(2559): Connection refused(C#111, localhost:8384)
thrown in /usr/local/xunsearch/sdk/php/lib/XS.php on line 2559
