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7/25/2019 De Thi Kinh Te Quan Ly
1/2
1Cho t tb ngng hi K-100-90 co c tnh: Q = 15 !"1!# 0"$%-$%"%' ()c*+,h.*/ ic th2o th3 4h t*6i:
t&h' 0:7 7:% %:1! 1!:1% 1%:!0 !0:!7#&8' !! $%"% 7 7! 50 !5
*' ;nh hi t tc th/i &t?ong t/ng gi/'@b' ;nh hi t t?ng bAnh t?ong !7 gi/ +*/ ic@ !Cho t tb >i *4 B-1!-90, co: Q = 0"%5 0"# Qcn
()c*+,h@ #cn = 0"!%Qcn- 1"9 (8@
*' ;A +Dng nhit ?t ?* Dc t/ tb cho h th>ng in bnngo*/i@
b' #> 4h t*6i nhit +*/ Qcn= 70)c*+,hthA hi t c6* t in c6* to6 *F +*/ b*o nhi@
$8Dt nh*/ *F co t ! t *F:G1= 0"!5# 0"001#!@
#in= ! 8#*E= 1! 8
G!= 0"!7# 0"0005#!@#in= $ 8#*E= 15 8
H2I /ng c tnh J= J' 7
8Dt nh*/ *F nhit in co c*c t *F i 4h t*6i in cho 7 t *F +*/
ic n co 500 t?i ng n ng*F t/ bF gi/ O cho i = 5P n@ &cho tA B'@
7/25/2019 De Thi Kinh Te Quan Ly
2/2
4h*6i bo6 */o ti>t i b*o nhi tin co th ?t ?* h*/ng n10 t?i ng t?ong 5 n@ i = 5P n@ &cho R tA B'@ h*/ng n 4h*6i t?*6 b*o nhi co th ho*/n +*i ho*6n nD 10t?i ng t?ong 10 n@ cho i = 5P n@ &cho B tA R'@ 9
n> g6i ti>t i h*/ng n ! t?i ng t?ong 7 n +in thAc>i n c>i c/ng Dc b*o nhi O i = 5P n@ &cho R tA S'@ 104h*6i ti>t i h*/ng n +*/ b*o nhi c>i n th n coth tch +FI Dc tin +*/ 10 t?i ng @ i = 5P n@ &cho StA R'@
xem ky lai tt ca cac v du a hoc