norma nº 3/1948

  	

	
 	

	
 



		
  !" #
$! %&'( !" )% $(*+,%-'( . +/'+ "/), 0 % %!'+ /!/1+ &23!"4 5*678("% 9,': (*!-3/;*67&< (-= %>>( ?(&@&( !*( )A B%&2&)2; ?CD<E>"A% F+% #
","' 3GH+-!%&;9":;)%* %'"/%6%+ >"-%';(-(IJK 1
1 =+!-'% /%!6 
L '; & MN O ?!%"'% !")"/;" $/ %6'( !3P;)% $(*+,%-A %6+&'+ "Q >+A( )/!4 -")3P;"( R"<!-%'%)( 0 %S%!'"; L '; TUVW L $! %'( !" )% $(%+,%-'( X#+&'+ " %(,9 %%-)%6 ,Y Z%"' ( H+-!*!9"/[ AY \!A&!('%%" H+-!%/9</[ *Y ]")!( 4 $!'+"/( % !-%< ^)+*"'!8([ )Y Z+ !>,_ 
`?(&=+%)(> Z&2")!%*&;(-"/!>[ L '; D<4a
	bc9 %"' (H+-<"!2L/6 " ^>'!,+/" "> <'!8!)")%> < '!>'d%">[ AY c-*%-'!8" _'%"&' (9(9+/" !-S"-'d/[ L '; eb1<QA% "2" \!A/!('%"B&HF/*!9"'' f
 $%>%-8(/8%  =(>'( 9%/" &%!'+ "/Q<''cg"h2C)":,"-+'%-':i(6 &Y )< >%*</( )% *(->+/';[ jY ), >%*<&( )% %,9 %>'!,([ AY 0<,(8% *(-*+ >(> )% ,(-(= "</"> "%% %" )( ,+-!*!9!([ klE ="-!m" %(-S% %-%!"> KnK
*" =( )% %>9%%!<&&>'"> )% %4 -(,%2>(o % *+&'+ " %, =% ":;; L '; pb1</A% qrkH+>%+ HH/%/9"/6 KnKs]%+-! Q %, /+=" ")%F+")(Q 9<' !,(-!( o&>'( !*( % "<'!>t '!*( )( H+-!*!9!([ AY 0 %>% 8" (> (Au%'(> F+% %" "%'% !m%, <;<'; 9(9+/" *(< %-'% -( B% &)q[ 
	v 
  
 rk1k wx  

0"' q*!-< "+)&y<%z F+% 8&>%, %&%8" < '&>'!*( ,' "8%> )" ]")!(4)/'+>/([ AY  !"< " $!>*('%%< H+-!*!9"/[ %Y 0 (,(8% _&-'% %>>% 9%/" ,+>&*<[ )Y ^>'!,+/" !-%,"d^)+*"'!8([ {	|UV}}} ~ 
 €
  ‚ 
ƒ„ … †‚` ^>Q'"A%/%*% "> *(-)!<D%C2-%*%>>" !"> 9"&/g"Gk'+ &>,( /(",c[ AY ?"*d/!'" " c-)+>' !" ‡('%/%d "Q 9 %>'/=&"-)( ";%(>&-o3
' ")&%!(-";&[ *Y ^>'/,+&"< (> %>9( '%> %, =% </[ )Y ˆ%/\6d 9%&_> S(/=+%)(> ' ,d*!(-"/>; 9+=-"-)( 9"/"!;>+"d;9+4 %m< % )&8+&="</([ L '; ‰ŠL $! %'( /"!;)%44$(%+,%-'( % *';!/;'+ "!Q%(,9( ;;.;>;<";6 "&Y$( $! %'( [ AY$( C%% %'"2&g/([ %;;Y$(Z%>(+ %/ ( %>%(&o&)(> % )%>!=-")(> 9%&_ 0 %S%&'( H+-!*!9"/Q %-' % "> 9%>>("> )% -('( &" *"9"%!)")%Q %>&)%-'%> -%>'" *!)%)%;

   	

	  
 !" # $%&'()* +,+&-. /01-. 102340156078 ./ 951:./ ;0725< 02=.15 109.4>09?@./
9.2. 201?A.1-./ B;; C D34?9?B?.E F1A, GHIJ)/ A349?.451?./ @; K10L07A315 B10/A51-. A?.@;;//?5A0497M ;./ /016?;./ .=N0A./ @5 B10/04A0 -07, F1A, -); O K1.2.P01O/0O5< /.= CB5;1.9-4-C @M K10L0?A315 D34?;-B2-<9.2 5/ /?2B--1?95;;0/ ;0 5A(.2?//-. N3-:51 9.4604?04A0< 02 @5O A5; /51 L?Q5@5 B0-5 R?10A.1?5 @0 R.93204A?.0S(3-A315< AF. -.:. /0N5 0.2B./A5-< -; (.4:10//. T.-U-.170. @= V01?@W< ?%O 
 XY
 5AZ/01-. @0=5A?@./ A022/ @. L.-U-.1, 10:?.45-E =Z /01-. 10B10/04A5@./ A.25?./E + L.-:30@./ A15@?0?.45?/ 45
10:?-.< A3@. @0 59.1@5 9.2 5 B1.:1525 ;,/01 .1:54?[5@5 \H -5<(.2?//-. K1.2.A.15]^ ?4A0:15@5 B0-./ 202=1./ @5AR?10_A.O 1?5,,@0 R.93204A. +,(3-A315-,</.= `a @?10;-. @. K10L0?A5 D3O 4?9?B5-, , F1A, --; O b06.:52O/0 ;/ @?/B./?;;0/ 02 0.4A151?.+  HHH  	 HH cde V0910A51?.