说明：
1、只操作股价在强势线上的股票；
2、在支撑线和生命线上的股票要快进快出；
3、生命线以下的股票尽量不要参与操作，但选股信号往往出现在生命线以下。其实鱼与熊掌不可兼得，我们买卖股票也不可能买在最低，卖在最高，只赚操作线上最安全的一段就可以了。三线多头排列，强势线在最上面，股价刚上穿强势线或回落在强势线上附近，就是买入良机，股价跌破强势线就是卖出的时候。
4、选股 满仓 信号为出现 低吸 追 满仓 三个选股信号同时出现的信号。

强势线:MA(C,21);
支撑线:MA(C,60);
生命线:MA(C,120);
MA5:=MA(C,3);
MA10:=MA(C,7);
MA20:=MA(C,21);
MA60:=MA(C,60);
MA120:=MA(C,120);
MA250:=MA(C,250);
A7:=C-REF(C,1);
A8:=100*EMA(EMA(A7,7),8)/EMA(EMA(ABS(A7),7),9);
A9:=(LLV(A8,2)=LLV(A8,7) AND COUNT(A8<0,2) AND CROSS(A8,MA(A8,2)));
A10:=CROSS(CLOSE,MA(CLOSE,7));
A11:=C<MA5 AND MA5>MA10;
A12:=CROSS(C,MA(C,21)) AND  CROSS(C,MA(C,60)) AND  CROSS(C,MA(C,120));
A13:=CROSS(C,MA(C,21)) AND MA(C,21)<MA(C,60) AND MA(C,21)<MA(C,120);
A14:=CROSS(C,MA(C,60)) ;
A15:=MA(C,5)>MA(C,30) AND MA(C,5)>MA(C,10) AND MA(C,10)>MA(C,30);
A16:=C>O AND REF(C,1)<REF(O,1) AND REF(C,2)>REF(O,2);
A17:=AMO>REF(AMO,1)*2 OR REF(AMO,2)>REF(AMO,3)*2 AND REF(AMO,1)<REF(AMO,2) AND REF(AMO,1)<AMO;
A18:=A15 AND A16 AND A17;
A19:=CROSS(C,MA(C,21)) ;
MH:=A9 AND A10 OR A14 ;
XG:=A11;
低吸:=IF(C<生命线 AND C<支撑线 AND C<强势线 ,MH,A13);
追:=IF(C>生命线 AND C>支撑线 AND C>强势线,MH,0) OR A18 OR A19;
支撑买入:=IF(C<强势线 AND C>生命线,MH,0);
高抛:=IF(C>生命线 AND C>支撑线 AND C>强势线,XG,0);
卖:=IF(C<生命线 AND C<支撑线 AND C<强势线,XG,0);
A20:=A12 AND MH AND A13;
DRAWTEXT(低吸,L-0.05,'↖低吸'),COLORYELLOW;
DRAWTEXT(支撑买入,L-0.05,'↖支撑买入'),COLORYELLOW;
DRAWTEXT(A20,L-0.45,'↖满仓'),COLORMAGENTA;
DRAWTEXT(追,L-0.25,'↖追'),COLORMAGENTA;
DRAWTEXT(FILTER(卖=1,5),H+0.05,' ↙卖'),COLORGREEN;
DRAWTEXT(FILTER(高抛=1,5),H+0.05,' ↙高抛'),COLORGREEN;




满仓选股

A7:=C-REF(C,1);
A8:=100*EMA(EMA(A7,7),8)/EMA(EMA(ABS(A7),7),9);
A9:=(LLV(A8,2)=LLV(A8,7) AND COUNT(A8<0,2) AND CROSS(A8,MA(A8,2)));
A10:=CROSS(CLOSE,MA(CLOSE,7));
A13:=CROSS(C,MA(C,21)) AND MA(C,21)<MA(C,60) AND MA(C,21)<MA(C,120);
A14:=CROSS(C,MA(C,60)) ;
MH:=A9 AND A10 OR A14 ;
A12:=CROSS(C,MA(C,21)) AND  CROSS(C,MA(C,60)) AND  CROSS(C,MA(C,120));
满仓:A12 AND MH AND A13;