二次金叉KDJ选股

公式模块：

RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;
K:=SMA(RSV,3,1);
D:=SMA(K,3,1);
JC:=CROSS(K,D);A:=BARSLAST(REF(JC,1));
XG:K REF(K,A+1) AND JC;