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<DIV><FONT face=Arial size=2>to asi bude opravdu chtit zopakovat co je to zpetna
vazba (kladna, zaporna)</FONT></DIV>
<DIV><FONT face=Arial size=2>a neni problem si v jednoduche operacni siti
uvedomit ZZV a KZV</FONT></DIV></BODY></HTML>