预警选股思路：当股价开始加速均线角度放大后发出预警信号，此时要关注大盘及当日强势板块，如果属于强势板块的强势股（在板块中涨幅靠前）即可立刻介入；介入后设定止损位（我设定止损位为当日最低价）持有；
CJL:=V/REF(MA(V,5),1);
ZDY:=O/REF(C,1)<1.06;
JD:=ATAN((MA(C,13)/REF(MA(C,13),1)-1)*100)*57.3;
牛股预警:CJL>2.5 AND ZDY AND CROSS(JD,45) AND C-O>(H-C)*4;
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