 est devenu introuvable.) </font><br><br>
&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp <b>A0</b>: On  <br>
&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp <b>Rel</b>: abandonner<br>
&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp <b>A1</b>: les mat&#233;riaux co&#251;teux , comme le magn&#233;sium qui est devenu introuvable  <br></div>