!vml]><img width=3D55 height=3D20
src=3D"./ch3-6.files/image064.gif" =
v:shapes=3D"_x0000_i1072"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1072"
  DrawAspect=3D"Content" ObjectID=3D"_1207488618">
 </o:OLEObject>
</xml><![endif]-->=BF=C9=C4=DC=CA=C7=C6=E6=D2=EC=BE=D8=D5=F3.=CE=AA=C1=CB=
=BC=F2=B5=A5,=CE=D2=C3=C7=D2=AA=C7=F3<SUB><!--[if gte vml 1]><v:shape=20
id=3D_x0000_i1073 style=3D"WIDTH: 18pt; HEIGHT: 15pt" o:ole=3D"" type =
=3D "#_x0000_t75"=20
coordsize =3D "21600,21600"> <v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image058.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D24 height=3D20
src=3D"./ch3-6.files/image065.gif" =
v:shapes=3D"_x0000_i1073"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1073"
  DrawAspect=3D"Content" ObjectID=3D"_1207488619">
 </o:OLEObject>
</xml><![endif]-->=C4=DC=B9=BB=B1=A3=D6=A4=CA=B9<SUB><!--[if gte vml =
1]><v:shape id=3D_x0000_i1074=20
style=3D"WIDTH: 41.25pt; HEIGHT: 15pt" o:ole=3D"" type =3D "#_x0000_t75" =
coordsize =3D=20
"21600,21600"> <v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image066.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D55 height=3D20
src=3D"./ch3-6.files/image067.gif" =
v:shapes=3D"_x0000_i1074"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1074"
  DrawAspect=3D"Content" ObjectID=3D"_1207488620">
 </o:OLEObject>
</xml><![endif]-->=B7=C7=C6=E6=D2=EC,=D2=F2=CE=AA<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 120pt; TEXT-ALIGN: left; mso-char-indent-count: =
12.0; mso-char-indent-size: 10.0pt; mso-layout-grid-align: none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: ZH-CN"><SUB><!--[if gte vml =
1]><v:shape=20
id=3D_x0000_i1075 style=3D"WIDTH: 125.25pt; HEIGHT: 18.75pt" o:ole=3D"" =
type =3D=20
"#_x0000_t75" coordsize =3D "21600,21600"><v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image068.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D167 height=3D25
src=3D"./ch3-6.files/image069.gif" =
v:shapes=3D"_x0000_i1075"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1075"
  DrawAspect=3D"Content" ObjectID=3D"_1207488621">
 </o:OLEObject>
</xml><![endif]--><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left; mso-layout-grid-align: =
none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: =
ZH-CN">=D3=C9=B5=DA=C1=F9=BD=DA=B6=A8=C0=ED7=A3=AC=B5=B1<SUB><!--[if gte =
vml 1]><v:shape=20
id=3D_x0000_i1076 style=3D"WIDTH: 60pt; HEIGHT: 23.25pt" o:ole=3D"" type =
=3D=20
"#_x0000_t75" coordsize =3D "21600,21600"> <v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image070.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D80 height=3D31
src=3D"./ch3-6.files/image071.gif" =
v:shapes=3D"_x0000_i1076"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1076"
  DrawAspect=3D"Content" ObjectID=3D"_1207488622">
 </o:OLEObject>
</xml><![endif]-->=CA=B1,<SUB><!--[if gte vml 1]><v:shape =
id=3D_x0000_i1077=20
style=3D"WIDTH: 56.25pt; HEIGHT: 17.25pt" o:ole=3D"" type =3D =
"#_x0000_t75" coordsize=20
=3D "21600,21600"> <v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image072.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D75 height=3D23
src=3D"./ch3-6.files/image073.gif" =
v:shapes=3D"_x0000_i1077"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1077"
  DrawAspect=3D"Content" ObjectID=3D"_1207488623">
 </o:OLEObject>
</xml><![endif]-->=B7=C7=C6=E6=D2=EC,=B4=D3=B6=F8<SUB><!--[if gte vml =
1]><v:shape id=3D_x0000_i1078=20
style=3D"WIDTH: 41.25pt; HEIGHT: 15pt" o:ole=3D"" type =3D "#_x0000_t75" =
coordsize =3D=20
"21600,21600"> <v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image063.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D55 height=3D20
src=3D"./ch3-6.files/image074.gif" =
v:shapes=3D"_x0000_i1078"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1078"
  DrawAspect=3D"Content" ObjectID=3D"_1207488624">
 </o:OLEObject>
</xml><![endif]-->=B7=C7=C6=E6=D2=EC,=C7=D2<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 30pt; TEXT-ALIGN: left; mso-char-indent-count: =
3.0; mso-char-indent-size: 10.0pt; mso-layout-grid-align: none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: ZH-CN"><SUB><!--[if gte vml =
1]><v:shape=20
id=3D_x0000_i1079 style=3D"WIDTH: 245.25pt; HEIGHT: 23.25pt" o:ole=3D"" =
type =3D=20
"#_x0000_t75" coordsize =3D "21600,21600"><v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image075.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D327 height=3D31
src=3D"./ch3-6.files/image076.gif" =
v:shapes=3D"_x0000_i1079"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1079"
  DrawAspect=3D"Content" ObjectID=3D"_1207488625">
 </o:OLEObject>
</xml><![endif]--><SUB><!--[if gte vml 1]><v:shape id=3D_x0000_i1080=20
style=3D"WIDTH: 72.75pt; HEIGHT: 45pt" o:ole=3D"" type =3D "#_x0000_t75" =
coordsize =3D=20
"21600,21600"><v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image077.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D97 height=3D60
src=3D"./ch3-6.files/image078.gif" =
v:shapes=3D"_x0000_i1080"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1080"
  DrawAspect=3D"Content" ObjectID=3D"_1207488626">
 </o:OLEObject>
</xml><![endif]--><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left; mso-layout-grid-align: =
none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: =
ZH-CN">=CF=C2=C3=E6=B5=C4=CC=D6=C2=DB=CA=B9=D3=C3=C1=CB=B8=FC=C7=BF=B5=C4=
=CC=F5=BC=FE,=BC=B4<SUB><!--[if gte vml 1]><v:shape=20
id=3D_x0000_i1081 style=3D"WIDTH: 75.75pt; HEIGHT: 23.25pt" o:ole=3D"" =
type =3D=20
"#_x0000_t75" coordsize =3D "21600,21600"> <v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image079.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D101 height=3D31
src=3D"./ch3-6.files/image080.gif" =
v:shapes=3D"_x0000_i1081"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1081"
  DrawAspect=3D"Content" ObjectID=3D"_1207488627">
 </o:OLEObject>
</xml><![endif]-->,=D3=DA=CA=C7<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 80pt; TEXT-ALIGN: left; mso-char-indent-count: =
8.0; mso-char-indent-size: 10.0pt; mso-layout-grid-align: none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: ZH-CN"><SUB><!--[if gte vml =
1]><v:shape=20
id=3D_x0000_i1082 style=3D"WIDTH: 116.25pt; HEIGHT: 45pt" o:ole=3D"" =
type =3D=20
"#_x0000_t75" coordsize =3D "21600,21600"><v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image081.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D155 height=3D60
src=3D"./ch3-6.files/image082.gif" =
v:shapes=3D"_x0000_i1082"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1082"
  DrawAspect=3D"Content" ObjectID=3D"_1207488628">
 </o:OLEObject>
</xml><![endif]--><SUB><!--[if gte vml 1]><v:shape id=3D_x0000_i1083=20
style=3D"WIDTH: 93pt; HEIGHT: 45pt" o:ole=3D"" type =3D "#_x0000_t75" =
coordsize =3D=20
"21600,21600"><v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image083.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D124 height=3D60
src=3D"./ch3-6.files/image084.gif" =
v:shapes=3D"_x0000_i1083"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1083"
  DrawAspect=3D"Content" ObjectID=3D"_1207488629">
 </o:OLEObject>
</xml><![endif]--><SPAN style=3D"mso-spacerun: yes">&nbsp;&nbsp;&nbsp;=20
</SPAN><SPAN=20
style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left; mso-layout-grid-align: =
none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: =
ZH-CN">=BC=B4<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 100.25pt; TEXT-ALIGN: left; mso-char-indent-count: =
9.55; mso-char-indent-size: 10.45pt; mso-layout-grid-align: none"=20
align=3Dleft><SPAN lang=3DEN-US><SUB><!--[if gte vml 1]><v:shape =
id=3D_x0000_i1084=20
style=3D"WIDTH: 145.5pt; HEIGHT: 83.25pt" o:ole=3D"" type =3D =
"#_x0000_t75" coordsize=20
=3D "21600,21600"><v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image085.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D194 height=3D111
src=3D"./ch3-6.files/image086.gif" =
v:shapes=3D"_x0000_i1084"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1084"
  DrawAspect=3D"Content" ObjectID=3D"_1207488630">
 </o:OLEObject>
</xml><![endif]--><SPAN=20
style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
</SPAN>(5)</SPAN></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left; mso-layout-grid-align: =
none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: =
ZH-CN">=C1=ED=D2=BB=B7=BD=C3=E6,(4)=C0=FB=D3=C3<SUB><!--[if gte vml =
1]><v:shape=20
id=3D_x0000_i1085 style=3D"WIDTH: 39.75pt; HEIGHT: 15pt" o:ole=3D"" type =
=3D=20
"#_x0000_t75" coordsize =3D "21600,21600"> <v:imagedata o:title=3D"" src =
=3D=20
"./ch3-6.files/image001.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D53 height=3D20
src=3D"./ch3-6.files/image087.gif" =
v:shapes=3D"_x0000_i1085"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1085"
  DrawAspect=3D"Content" ObjectID=3D"_1207488631">
 </o:OLEObject>
</xml><![endif]-->=D3=D0<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 110.25pt; TEXT-ALIGN: left; mso-char-indent-count: =
10.5; mso-char-indent-size: 10.5pt; mso-layout-grid-align: none"=20
align=3Dleft><SPAN lang=3DEN-US><SUB><!--[if gte vml 1]><v:shape =
id=3D_x0000_i1086=20
style=3D"WIDTH: 114.75pt; HEIGHT: 18.75pt" o:ole=3D"" type =3D =
"#_x0000_t75" coordsize=20
=3D "21600,21600"><v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image088.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D153 height=3D25
src=3D"./ch3-6.files/image089.gif" =
v:shapes=3D"_x0000_i1086"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =
ShapeID=3D"_x0000_i1086"
  DrawAspect=3D"Content" ObjectID=3D"_1207488632">
 </o:OLEObject>
</xml><![endif]--></SPAN></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left; mso-layout-grid-align: =
none"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =CB=CE=CC=E5; =
mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; =
mso-font-kerning: 0pt; mso-ansi-language: =
ZH-CN">=C1=BD=B1=DF=C8=A1=B7=B6=CA=FD,=D3=D0<o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"TEXT-INDENT: 73.05pt; TEXT-ALIGN: left; mso-char-indent-count: =
6.93; mso-char-indent-size: 10.5pt; mso-layout-grid-align: none"=20
align=3Dleft><B><SPAN lang=3DEN-US><SUB><!--[if gte vml 1]><v:shape =
id=3D_x0000_i1087=20
style=3D"WIDTH: 215.25pt; HEIGHT: 42pt" o:ole=3D"" type =3D =
"#_x0000_t75" coordsize =3D=20
"21600,21600"><v:imagedata o:title=3D"" src =3D=20
"./ch3-6.files/image090.wmz"></v:imagedata></v:shape><![endif]--><![if =
!vml]><img width=3D287 height=3D56
src=3D"./ch3-6.files/image091.gif" =
v:shapes=3D"_x0000_i1087"><![endif]></SUB><!--[if gte mso 9]><xml>
 <o:OLEObject Type=3D"Embed" ProgID=3D"Equation.3" =