问题
A． expositionB． comparisonC． contrastD． interaction
A． exposition
B． comparison
C． contrast
D． interaction
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
