Giao Trinh Cau Long - DH Su Pham

5/25/2018 Giao Trinh Cau Long - DH Su Pham

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B GIO DC V O TO

TRNG I HC S PHM TP H CH MINH

GIO TRNH CU LNG D!"# $%& '("% )(*" $%+,*" "#-"% GDTC.

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Th.s Nguyn Vn Hng

Th.s Trn Vit Dng

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>g$% > +," )- >%( :+ N=+ :"% $K+ )i( >^$ :] "%4"% >4 ' -0 $%& :^(%;"# "# >"# W :]"#F >4 $f "%(h+ >%E( #(4" $%+c" W :J >`& $ %]( >"$8"# >^> B( ), >&"# >%( :+ $K+ 8"# 4( #(X( a+,=> >^> ,=+ >^ "-, ' $%(=":;%= >*" 'd"

T%& $8"# >%?$@ V tS

>4 $f >%J 7$ :"% >^$ :] "%4"% %4, $%0

>%& %4( $$% '4+@A >&"# >%E( #(4" "%> :"%F )> >%J $%+,J" :]"# )h >;i$ )i( $ , -(F

>^$ :] "%4"%A T&"# 0]> $ , "%> :"% )> >%J $%+,J" :]"# )h >;i$ )i( >%E(

#(4" "#9" %" >%b >^$ :] "%4"%

11


12/36

D4 )-& "#+,*" 5=> %/"#"%4"% >^$ :] :"% $K+ >%b $K+ %X(@

R> "#9" >%E( #(4" :"% $K+F >4"% >%Y :"% $K+ 'i0 #K" ;i(%&$ ' Q"# :]"# >$ W> "%X, :"% $K+ >*" $4& %8"# :?"# >`( $% :J$%E $K+ :=" 0i( :"%

T&"# 0]> $ ( :"% $K+ "%> :"% %X( >/"# "%4"% >^$ :] :]"# >$F>/"# "%4"% >^$ :] $& +( $ S Q"# "%(h+ $ $Z >4,F %`" $%= W(*" :]$"% >4, 5%( >%$ %(" 5 >%+> :]"# >$

3.3. 8i9m r:i.T&"# $K+ 8"# :(J0 ( - :(J0 >(= 7$ #([4 $K+ )- 0> :> >&"#

%`0 )( >&-" 'd" S Q"# ,=+ >^ :(J0 ( >^> ' +8" >`& $%& :^( %;"#"%["# >b"% %+^"# W> "#E W :]"#F +8" +8" )%X( ( $%+,J" >&"# %`0 )($Y4 'd" 0b"% :J :m $K+ S Q"# >^> :(J0 ( - 0]> ,=+ >^ $f >%J #%( :(J0>$ >(= >&"# >%( :+

J )" Q"# >^> ,=+ >^ :(J0 ( VV >%;E"# )" :Q"# $$ $%(=">%+> ("% %&`> W(=" %&F ' Q"# $$ :;E"# $K+ "#9"F :-(F >%n"# %&$ $%&)i( >^$ :] "%4"% :J :"% $K+ J )" Q"# $$ ,=+ >^ :(J0 ( $K" $% @

A Q"# W(=" %& $$ :;E"# $K+ -(F "#9"F >%n"# %&$ $%& $W(> $% :=" 1 #f$ #K" ;i( )- 1 #f$ $+^( 'd"

A "% $K+ )-& "( 74 ) >g $%+c" W $Y4 :^( %;"# T&"# > +,"5%8"# "*" $% >6"# 0]> :;E"# $d+ $ WX" "-& 0- $K" %X( %^( %F 5=> %^ '?$ 0`"% )->^$ :] :J #(-"# :(J" >&"# >%( :+

CH9FNG

1(


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H TH8NG $ TH"dT CF 6;N CI" @#NGV? JH9FNG JHRJ G;NG D%+> $ WX" >&"# $K+ 8"# > :4 `"# )- %&"# % Nf W4& #k0$$ W;i$ ( $%+,J" $Y4 $%d" )- :]"# >$ :"% $K+ $Y4 >4, S %^( %%+> $Y4 $%d" )- >4, ' #f %K" >g$% $$ >`& "*" %(+ a+X $Y40( K" :"% $K+ J > +," )- >%( :+ $K+ 8"# >^>F "#;E( > $K" %X(%&-" >%(" >> :;%+> :J -0 >(h" :h $%& )($ ' Q"# $$ $%(=">%+> >%( :+ 0]> $$% %9n.

D( $%+,J" - $ ' a+4" >6"# :J >%$ %(" >8> $$ %&`> :]"# $Y4 >4,>&"# 0( K" :"% $K+ Vi( (" >g$% 'd" >;"# :^( ]"# `( $%_ $f q :=" 1

VV >*" 'd"F :k"# >%E( :^( %;"# +8" >b0 $$ :(J0 74 "#;E( :J :"%$K+ )-& :f "*" ( $%+,J" #K" "%; :(h+ 5(" W9> W+]$ >;i$ 5%( >%$ %(*" 5>%+> :"% $K+ $Y4 >4, D( $%+,J" >^> ' >`& :(h+ 5(" >%+" %$ %("$$ :]"# >$ >4, $%Y :]"# )- %(+ a+X N=+ ( $%+,J" 5%8"# >^> ' +8" +8"

W :]"# )- -0 #(X0 +, $ 5 >%+> :"% $K+ $/" $? )K& %;"# % ($%+,J" 0- "#;E( >4 $%(4 5 >%+> ( $%+,J" $Y4 $K+ 8"# 4 -0 $$ &`( '4+@ D( $%+,J" W;i$ :" D( $%+,J" "%(h+ W;i$ D( $%+,J" "%X, W;i$

T&"# :f $/" $? )-& %;"# %;i"# ( $%+,J" 0- 0( &`( ( $%+,J" >*" `(:;$ $%(4 -0 $$ 5 >%+> "%l Vg Q "%; @ T(="F !(F %X(F >(F $%&Vh$%( >(=> 5 >%+> ' :;.

C%& :=" "4, )" $%;4 $f 0]> % >%^"# %d" &`( $$ 5 >%+> :"% $K+0]> $$% >&-" (" )- $%g"% 7$ N*+ $/" $? )-& $%?$ "/"# >$ Q"# $Y4 5>%+> "#;E( >4 $f >%J $%(4 5 >%+> $Y4 >4, 4 -0 p &`( $%g"% '4+@ C$ 5 >%+> #(4& $K+ C$ 5 >%+> %"# >%Y C$ 5 >%+> >" $8"#

C/" $? )-& %b"% >%?$ :]"# >$ "#;E( >4 $f >%J $%(4 5 >%+> :"% $K+ -0 %4(&`( $%g"% -@- Cc k thut nh cu cao tay: L- $$ 5 >%+> :;%$ %(" )i( $$:]"# >$ :"% $K+ $4& >*" )4(- Cc k thut nh cu thp tay:L- $$ 5 >%+> >%$ %(" )i( :]"# >$ :"%$K+ >% ;i( )4(

1*


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S&"# )i( $$% $%(4 "-, `( $f 0]> '^ 5 >%+> 5%$ :;%$ %(" "#4"#>K0 )4(F >&"# :f :$ W(> - $$ 5 >%+> :"% $K+ #K" ;i(F )b ), $f >%J>`0 >%E( $%(4 5 >%+> :"% $K+ >%& 0]> '^ "%f" "%; '4+@

>%+> :"% $K+ >% >4, >%+> :"% $K+ $4& >4, >%+> :"% $K+ #K" ;i( >%+> #(4& $d+q1q >%+> $K0 )+ Cch cm !t thun tay : f - $$% $K0 ) 0- 5% #([4 $Y4 "#f" >4,$( )- "#f" >4, >l :^( (" )i( $`"% "%l $Y4 0> % $Y4 $%+8( )F "#f"$()- "#f" >4, >l )-& 10> ]"# $Y4 $%+8( )

N#f" >4, >l )- "#f" >4,

#([4 %( >$% 4 "#f">4, #([4F "#f" > )-"#f" > 5% `( "90 ,$%+8( )F "# W4" >4,5%8"# "*" '> $" )F :K+ 0> $Y4 $%+8( ) "#4"# W"# )i( 09> $ "%l $Z >4,F 0> ) $ WX" )+8"# #f$ )i( 0> :> %b"% q.

Nf( $%+"# >> $X $$ :]"# >$ %> $K+ >%+" >4,F :"% $K+ 5%+ )$W*" %X( 'd" )- :"% $K+ )"# a+4"% :_"% :K+ 5%+ )$ W*" >( $Y4 'd" :h+ ' Q"# $$% $K0 ) "-, S > '4( K0 "=+ "%; >> $X $$ "#f" >4,

$K0 ) a+ $%>+ Cm !t t"# tay@ T*" $ ' $$% $K0 ) >%+" >4, "#f" $( )-"#f" >l :;4 $%+8( ) %( a+4, 4"#&-(F :(J0 >4 $Y4 "#f" $( >*"0> ]"# $Y4 $`"% >&"# %&$ #E "%l$Y4 $`"% >&"# N#f" #([4F "#f" >)- "#f" > 5% `( "90 $%> , $%+8() K+ 0> $Y4 $%+8( ) '> )-&

%K" >(= #( W-" >4, )i( "#f" >F -0$%& "# W-" >4, 0]> 5%&X"# >^"#F $`"% $Y4 ) %;i"# )-& Wd" >( $ >%JF

0> ) %( "#4 4 '4+ %b"% 1.

q11 >%+> #(4& $K+ %X(P%> $K+ - 5\ >%+> :; :K+ > $ VV :4"# >`"# >%( >"%

>`( 5%+ )$ %> $K+F !"# ) :"% )-& $K+ -0 $%& $K+ W4, :( >*" 5%8"#( )-& 5%+ )$ :m %> $K+ $Y4 :^( %;"# P%> $K+ :;


15/36

:K+ $Y4 >Z $%?$ >" $8"# C%> ; $K+

P%> $K+ :; $K+ >%+" >4, )- %> $K+ >(>4, $ht cu thun tay (tay ph%#) :N#;E( %> $K+ :?"# ) >g 5%+ )$

%> $K+ #K" :;E"# >+"# >d0F $$% :;E"# %> $K+ 5%&X"# q0F >%d""#;E( >; >%= )4( >( %;i"# :^( (" )i( ;i( C%d" >( %g4 >;i$F0( W-" $%d" %;i"# )h ;i( C%d" %X( %g4 '4+ 0(F W-" $%d" %(%;i"# )h W*" %X(F 5%&X"# $$% #([4 1 W-" $%d" ]"# W"# )4( T6"#>d0 $ >%J k"

Hnh 3 & thut '#ao cu ph%#

*" $%d" %X( %( $%+c" W %> $K+F >4, %X( $K0 ) :;4 *" %g4 '4+

W*" %X(F 5%++ >4, %( $&F >4, >( "#f" $(F "#f" >l )- "#f" #([4 5 $%>$"% $K+F :;4 4 %g4 >;i$ W*" %X( WQ"# S4+ :f >4, >( >%X W+8"# $K+F >4,%X( )+"# ) :"% $K+ %( :"% $K+ >6"# >d0 $ >%J $%+,J" > $%d" %X(*" $%d" >( %b"% p. $ht cu t"# tay : V >g %> $K+ $f >%J %g4 '4+ :;E"# %> $K+

#K"5%&X"# q2 s t2 $0 )- #K" )i( :;E"# >+"# >d0 C"# $f 5%( '4+ )`$%

%> $K+ #K" )- #K" :;E"# W(*" 6$ N#;E( %> $K+ :?"# 0> %;i"# )h;i( V >g %4( W-" $%d" :?"# >$% >;i$ '4+ $%d" >( %&$ $%d" %X( >;i$ :h+ $f >%J :;;i$F >6"# >d0 $ >%J (

)-& $%d" >;i$F >4, %X( $& 5%++F ' Q"# $$% $K0 ) >( >4, )- :;4) "#4"# 4 5%&X"# "#4"# >%9> ;"#F 0> ) ;i( $`"% W*" >( $ >%JT4, >(F "#f" >4, $( )- "#f" >4, >l #([ $%9$ 1 s p $%(=$ 8"# $4"%

1`


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(Hnh ) & thut '#ao cu t"#$K+F "0 $K+ $%$ 7+^"# T%d" $K+ :^( (" >%n"# )i( 0> >;i$ $Y4 )

%( :"% $K+F $n"# >4, 5& >%& $Z >4, $9> :c, "#4"# 4 >;i$ -0 $%&:;E"# W4, )"# $+"# $Y4 $K+ $4& %" 0 >*" $Y4 ;i( )- ( )-& 5%+ )$#K" :;E"# %> $K+ #K" %b"% .q1p C$ 5 >%+> :"% $K+ 8"#

a* nh cu cao ,u thun tay : Cu cao@ T;i$ >(*" $K" %X( %(J+ 5%( "(0 $K+ $4& - :J $%_ $$

a+X $K+ W4, >*" $4& :;%+>>4, - >%+" >4,F >( >4, )- :_"% :K+

nh cu cao ,u thun tay@A .#a# o/n chu0n :T;i$ %=> %X( %" :&" $%+c" 7$ %;"#%;i"# )- :(J0 ( $Y4 $K+ :=" :J )- "#%(*"# "#;E( !( "#%(*"#.F -0 '4&$%& $K+ ( 7;i"# ) >g %g4 >*" $% 4 >;i$ )4( %X( $Y4 0b"% V4( >(:^( (" )i( ;i(F $%d" >( >;i$F $%d" %X( '4+F >6"# >d0 ( )-& $%d"

%X( T4, >( $& 5%++ #( *" > "%(*"F >4, %X( $K0 ) $"% >4, $& 5%++> "%(*" )- :;4 ) *" $4& >*" )4( %X(F %4( 09> $% "%b" $K+ :=" Hb"%t.A .#a# o/n nh cu@ %( :"% $K+F W9> :K+ > :]"# >$ $%+c" WF $"% >4,

%X( :;4 4 '4+F >%& :f 5%++ >4, "d"# *" $4& %" %n" '& )i( )4( :J :;4

) 4 '4+ :K+F $Z >4, +( > "%(*" "# W-" >4, %;i"# *" >*". S4+ :f%^( %4, 5& >%& $n"# >4, "%4"% $%f"# ), $Z >4, 4 >;i$:"% $K+ :(J0 $4& "%> 5%( >4, : );" >%n"#

1b


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A .#a# o/n kt th4c@ S4+ 5%( :"% $K+ >4, $K0 ) $f >%J >%& :- a+" >g"%)+"# 4 >;i$ )- 7+^"# ;i( %g4 W*" >( k( >%+ ) )h >;i$ >%d" "#;E(C!"# $ :f $%d" >( !( 4 '4+F $%d" %X( W;i$ 4 >;i$ >6"# >d0 $%+,J" >$%d" '4+ 4 $%d" >;i$"% $K+ $4& 'd+ >%+" >4, $" $f >%J :;^> :]"# >$ $%+c"W '4+ :f $%d" %X( W> "%X, *" $4&F "%4"% $%f"# a+4, "#;E( >*" 5%8"#:k"# >%E( %&-" >%-"% :]"# >$ )+"# ) :"% $K+ ]"# >$ :"% $K+ :;&"# >%E( :(J0 "#9" "#Y( :"# $ $K+ :4"# :] $4& "%> >*"5%8"# W9> :K+ ( 7+^"# nh cu cao ,u t"# tay :

A .#a# o/n chu0n :%( :^( %;"# :"% $K+ '4"# $K" %X( %" :&">^> %;"# %;i"# )- :(J0 ( $Y4 $K+ :="F "%4"% $%f"# a+4, "#;E(F ($%+,J" W;i$ $%d" )h %g4 '4+ W*" >( B;i$ $+^( $!"# !"# $%d" %X( W;i$$%& $%d" :=" )`$% $+^( 'd" %g4 W(*" 6$ W*" >(F ;"# :^( (" )i( ;i(T6"# >d0 $ >%J ( )-& $%d" %X(F '4& $%& $K+ ( %g4 >*" W*" %X( $>%J

1f


18/36

A .#a# o/n nh cu@ T;i$ 5%( :"% )-& $K+F "%4"% $%f"# $%+,J" :Z(>%-"% $$% $K0 ) >( >4,F #([ ) >;i$ "#$ %X(F 0> ) %;i"# *"

(Hnh 6) k7 thut nh cu t"# tay

>*" 5%( >(= 7$ :"% $K+ :( C% @ 5%( !"# '?$ $+^( $!"# $K" $% '%^( %$ !"# $ )c, $Z>4, ]"# >$ !"# '?$ $+^( $!"# %X( $f ' %^( %%d" )i( :]"# >$ :` :> $Y4 %4( $%d" )- :]"# >$ a+4, "#;E(Anh cu cao ,u t"8n 9nh u@ }=+ "% $Y4 5\ >%+> :]"# >$ "-, )h $

WX" #(^"# "%; 5\ >%+> :"% $K+ $4& 'd+ >%+" >4, C%_ $f :(J0 5%$ -:(J0 :"% )-& $K+ >*" 5%8"# %( $% )h %g4 >*" W*" )4( >( %( $%+c"

W :"% )-& $K+ >%d" "#;E( %( "#X '4"# >( %( :"% $K+F $"% >4, 5&>%& $n"# >4, -0 $%& ) )"# a+4 :_"% :K+ T/"# >^$ :] )+"# ) > %g4

W*" >( 4 >;i$F $% %> %+, $ W]> %> :"% $K+ $Y4 $Z >4, Hb"% u.c & thut t cu :VQ> $K+ - 5\ >%+> :"% $K+ 0`"% -0 $%& $K+ :( >%& :;E"# >%n"# >:(J0 $4& "%> :( $%=$% 7+^"# 'd" :^( %;"# ]"# >$ 5\ >%+> "-, >`& 4'?$ 0`"% :"% $K+ i"F >^$ :] ( $Y4 $K+ "%4"%F $f '?$ +, %(= :^( %;"#i" Vb ),F "f - 5\ >%+> $%Y ,=+ >&"# >" $8"#A$hn ;o/#@ \ >%+> )Q> $K+ :; )h %;"# (" !"# '?$ @ C%(4 -0 p &`( - )Q> 0`"%F )Q> "% )- )Q>#

e> )h %;"# (" :(J0 ( @ C%(4 -0 1 &`( - )Q> $K+ 74 )- )Q>$K+ #K"

e> )h :;E"# W4, $Y4 $K+ >%b @ C%(4 >%-"% )Q> $K+ :;E"# >%n"#F )Q>$K+ :;E"# $%&T> $X $$ &`( )Q> $K+ 5J >*" :h+ $f 5\ >%+> >%+" >4,F >( >4,F )"# :_"%:K+

1


19/36

Vt cu %+" >4, S4+5%( ( $%+,J" :=" ) >g >%g$% %% >6"# >d0 >%$%(" :]"# >$ $%+c" W W> "%X, *" $4& :_"% :K+

A.#a# o/n nh cu@ %( W> "%X, "#%(*"# "#;E( >%b :k"# >%E( "d"# )4( *"

(Hnh ?) @h0y p cu

%g4 >*" W*" %X( 5& >%& $"% >4,F $n"# >4, )- ) #( *" :J );" >%d""#;E( *" >*" S4+ 5%( W> "%X,F >%d" "#;E( %( "#4 4 '4+F ;m" "#$ >%-"%%b"% $"% $+"# "#;*" :"#'4+ W*" %X(F $n"# >4, )+"# '4+ > "%(*"F $Z >4, +( '4+F $n"# >4, 5& >%&) :;4 > >*" 7+^"# ;i( )- 4 '4+ L$ "-, $K" $K0 ) l"#F >%& :f

a+4, "#;E( %f WQ"# 5& >%& $"% >4, %X( )+"# )h %g4 W*" >*" W*" %X(F5%++ >4, :( >;i$F $n"# >4, !"# >&-" W] >^$ :] )+"# )h %g4 >*" :"#>;i$F 5& >%& ) )+"# 4 >;i$ )i( >^$ :] $4& Hb"% .

%( :(J0 :"% $K+ %g4 >*" :"# >;i$ )4(F $n"# >4, 7&4, )-&>&"#F $Z >4, # >;i$ )- %( $& )c, $Z >4, %> $ : $K+ L$ "-, "#f">4, $K" :]> "#]> "90 $%9$ $" )F :0 $ W]> %> $Y4 $Z >4, > >+"# )-&:(J0 :"% $K+ Gf$ #([4 ) )- %;"# %;i"# :"% $K+ "%l %" r2 2 M>$%g"% (" $Y4 ) :"% )-& %g4 '4+ "0 $K+ -0 $%& $K+ :( >%n"# 7;i"#;i(- .#a# o/n kt th4c :S4+ 5%( )Q> $K+F $n"# >4, >%& a+" >g"% >%+ )-& >;i$

>%d"F >&"# a+ >b"% > )h ) >g $ >%+ )h >;i$ "#$A Vt cu "%X,F !"# $ a+4, "#;E( 4 %g4>;i$ )- '4"# >(F % >< $%& $"% >4, )Q> $K+ W4, '4"# %g4 #f$ :^( (" 'd":^( %;"#

1o


20/36

A Vt cu ( >4, (J0 5%$ :d, - $K" !"# '?$ )+"# ) 0`"% >;i$ 5%( :"%$K+ T%E( :(J0 )Q> $K+F #f$ #([4 ) )- %;i"# : $K+ $K" "%l %" r2 2Hb"% 3.

(hnh ): Vt cu t"# tay >%+> $9> $K+@

C$ 5 >%+> $9> $K+ - 5 >%+> :;>(J" > :]"# >$ 5 >%+> Wl "%l '> ;i(F 5 >%+>$9> $K+ #k0 5 >%+> $9> $K+ >%+" >4, )- $9> $K+>( >4,

>%+> $9> $K+ - !"# ) $9> )-& %g4

;i( W*" %X( %&$ W*" >( $K+ %&$ :, $%+8($K+ -0 $K+ 7&4, '4"# %X( '4"# >( %&$ >(hnh D) E nhEa+4 ;i( CK+ 5%( :"% '4"# $-"# '> ;i(F )- ' 7&4, > $-"# 0`"% >%b :^(

%;"# $-"# 5%f :"% >X T :f >`& :(h+ 5(" >" $8"# $f % >4, #k0@ "% $K+ %X( >% >4, )- :"% $K+ >( >%>4,

(q


21/36

( &7 thut nh cu ph%# thp tay) (&7 thut nh cu t"# thp tay)

(. Jhng Zh+Z ging -0y.G(X"# `, 5 >%+> $c+ 8"# - "%(0 )Q %-"# :K+ $Y4 a+ >b"% #(X"#

`, )- %+" +," $K+ 8"# C%_ $f >%J :`> :;g$% $%& "#+E( %6$ >*" $ ' >4"# W 5 >%+>>&-" (" $%& "#;E( > J #(X"# `, 5 >%+> $f %(+ a+X >^> $K" a+ >(>"%(0 )Q )- ,*+ $K+ '[email protected]. Bhim vD >Eu cu cAa cng t?c ging $5>.211 @h#Fm

A T4"# W :K, :YF >&-" (" $$ 5 >%+> $K+ 8"# %(" :`( > >%& ,*+$K+ 0Q$ :g$% $"# "%; :^( >;b"% %+^"# ("W(=" %+^"# %?$ >` $Y4 :(h+ 5(" >%( :+

A P%> %+, $4& :] "%["# %(+ a+X ' Q"# %(+ a+X 5 >%+> >&"#"%["# >b"% %+^"# %?$ >` $Y4 :(h+ 5(" >%( :+

A T%;E"# 7+,*" %&-" >%(" 5 >%+> 5=> % >(J" $$ >^$%> )- "4"# $ (*" a+4" :J >/"# $;E"# %(+ a+X ' Q"# 5 >%+> 5 >%+>>&"# > +," )- >%( :+

212 G8u cu

+ >b"% #(X"# `, 5 >%+> $K" a+ >(> "%["# ,*+ $K+ '4+@A X0 WX& ,*+ $K+ $Y4 $$ "#+,*" >9$ #(X"# `, :( > : :=" 5%fF >

:" #(X" :=" %?$ >`F > : W(=> :=" $%;4 W(=>A G(X"# `, 5 >%+> %X( :;(=" %-"% 0]> $$% >+K" > %


22/36

:]"# >$F $$ 5 >%+> >(= >%+ >;i$ ' - >(h" :h >%+" (= >%+$$ 5 >%+> '4+

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23/36

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CH9FNG VCHIN THU|T THI U PP GINGD}

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A L-0 $%& :^( %;"# 0> :( ' 5%^"# $%= >6"# >d0J :`> :;d0F 5%8"# >%J ( $%+,J" 5 >%E( :=") >g >%+" X $K+ >&"# >; >%= W :]"#F $%>; - $$ :(J0 #f$ 'd" 1 #f$ $+^( 'd"F1 #f$ #K" ;i(. ' -0 $%& :^( %;"# (*" >Q$ ( $%+,J" :J :"% $K+ )->(*+ %4& >%J $ > i" J -0 :; 0l( >%b '

Q"# a+X :"% a+,=> :"%1.3. T tNng chO 5o @hi v=n $Dng chin thu=t.

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%! % W(=" %& )- $%+,J"

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'9$ )i( "%4+ > >+"# 5(=" >^( :4 $Y4 > >%J :J Q"# $%(=" >%+> %!% )-& :(h+ 5(" $Q>%J $Y4 >"# >" L+8" '+, "#% '"# >`&F $%Y :]"# 5%( )" Q"# $%(=">%+>F 0( >" :+ 5%$ "%4+F :^( >;%+> "-&0- $K" :;%4, :Z( 5 >%E( :J %! %"# >" :+(. Jhng Zh+Z ging -0y.

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d, - #(4( :&`" :K+ $Y4 %-"% )( $%(=" >%+> )- $f "#%4 a+,=> :"%>i( "%(" )Q >%$ %(" $%(=" >%+> C%> ;F 5%X "/"# %" :&"F >b"% :] %+" +,"F )- 5("% "%(0

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H-"% )( $%(=" >%+> $%_ >%J %(" 4 W*" "#&-( 5%( #(X( a+,=> "%(0 )QW"# )" :]"# H&`> :]"# "-, - 5=> a+X >Z"# %b"% >; +,F"/"# $ >%J $%> )- )^" 5 7X& '" $f $Y4 VV T%8"# a+4 "%" >%?$ )-

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2.2.2. Eu cu cAa cng t?c ging $5> chin thu=t.

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