bai tap lon che tao phoi
TRANSCRIPT
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2 2 1, 5
1 2 1, 5 100 1, 5 55,5 1, 5 92 1, 5
42
31
55,5
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0, 6
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2
4
Dh
m l h
2 2100 60
126 ( )4 4
2 280 4230 ( )
4 4
65 80 175
240 80 175 60 80 20 2
19080 ( )
4
gang
gang
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30%
0,3
vd vd
P
G G
H
VDG3,1
2
2P
P
H H c
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2
1022
P
PH H
c
P
vdvd
H
GG
3,0
%30
4orF
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BL
2 2 2
70 24 2065 45 25
4 4 4
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ct
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