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function ValidatePID(const APID: string): string;
{ÄÚ²¿º¯Êý,È¡Éí·ÝÖ¤ºÅУÑéλ,×îºóһλ,¶Ô18λÓÐЧ}
function GetVerifyBit(sIdentityNum: string): Char;
var
    nNum: Integer;
begin
    Result := #0;
    nNum := StrToInt(sIdentityNum[1]) * 7 +
            StrToInt(sIdentityNum[2]) * 9 +
            StrToInt(sIdentityNum[3]) * 10 +
            StrToInt(sIdentityNum[4]) * 5 +
            StrToInt(sIdentityNum[5]) * 8 +
            StrToInt(sIdentityNum[6]) * 4 +
            StrToInt(sIdentityNum[7]) * 2 +
            StrToInt(sIdentityNum[8]) * 1 +
            StrToInt(sIdentityNum[9]) * 6 +
            StrToInt(sIdentityNum[10]) * 3 +
            StrToInt(sIdentityNum[11]) * 7 +
            StrToInt(sIdentityNum[12]) * 9 +
            StrToInt(sIdentityNum[13]) * 10 +
            StrToInt(sIdentityNum[14]) * 5 +
            StrToInt(sIdentityNum[15]) * 8 +
            StrToInt(sIdentityNum[16]) * 4 +
            StrToInt(sIdentityNum[17]) * 2;
    nNum := nNum mod 11;
    case nNum of
   &n


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procedure copyfile(sourcefilename,targetfilename : String);
var f1, f2: tfilestream;
begin
 f1 := tfilestream.Create(sourcefilename, fmopenread);
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