with dma.fzquery do begin
       close;
       sql.clear;
       sql.add('select wzcl from huac where huacbh=:byh1');
       parambyname('byh1').asstring:=skinedit1.text;
       open;
                if (fields[0].asstring='0') then begin
                showmessage('该记录已被结算完毕');
                 abort;//从这里直接结束跳出,怎么不行?
                 exit;
                 end
                 else begin.....