请高人帮写个通达信成交量5.10.20多头排列和空头排列和金叉的选股公式...答:{成交量均线空头} ma(v,5)<ma(v,10) and ma(v,10)<ma(v,20) and ma(v,5)<ref(ma(v,5),1) and ma(v,10)<ref(ma(v,10),1) and ma(v,20)<ref(ma(v,20),1);{成交量均线同时金叉} cross(ma(c,5),ma(c,10)) and cross(ma(c,10),ma(c,20)) and cross(ma(c...