问题
2,4,7,21,,96A.24 B.27 C.54 D.81
2,4,7,21, ,96
A.24 B.27 C.54 D.81
请帮忙给出正确答案和分析,谢谢!
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