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. thdi gian 150phfrt(khhng giao tlt)
kd
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C0u2: (2tlldnr) | I
HiQudlQnthd lFl d cdrntliQnktrltlrOrlgdilng digrrh 120V.NCunrdcvio rt(r;1rQl
rtrdyst{yc6 clinlrnrtic lh l20V-300W lhl cdngsutfrttrr,rc ra chi cbn 2.50!t. toi
a) N0trttric eottg.sorrg rndys0ynlru-tr0n d
trui vi,,
n t r & l h c0ng . , i 9 thyc
' n r d y | } b a c l n h i 6 r r , / | t 6 q r r a s q . b i d n r t d i d i Q quot;d,n.tlrie o i ' t suft r o { tefr1nfi;r,,1
b)I|fryn0unrQtgiiip|r6pdck|r6cplrgc|riQrrtut1rrg|r0n.
COu3: (2dldrrr)
?d tV ttdtt8tttlttltlOttctto,nrQlngrrilldfl th)rrg 2 lrtrgr'gcgidng nhnu,| illrrrvdp.
:
d0y vtr m6c lreo.l l6i rrgrrdi dg bd trf lrQtlrdngnhrrthd nlo Jd 1,rc
d6 kdo rr{trrg
rrrlrrh chl blng ll4 tr<lng
l0n lugngcfianguli. ve hlnh vll clrririg nrinh.
116 khdi lrrqrrg rnusdtcriarbng rqr,^, vtlir,dny.
qua vh ldrn ry
C ' d u 4 :( 2 d i C r r r )
'l-rong
rrrQt nu0i git ngrrli ta treomQtthiei bi
lrgi
cho gA udngnudcdrgc tuo thAnh cdcclpng ;
tt c1r
I c{i chai, I diu, lrudc,rlAyvl ntdclreo (chaidrrgc
lreo cd dinh so vdi din)
a) llf,y nOul6nr t6t tdctlrpngclrfnlrcfin tlriCt nlty.
tri
b) CiAi tlrfch.
CAu5:(2didrn)
llni gtrorrg
phfrrrg vdi rrltnu
lr.ro rnQlg(rc50quot;vr hutlrg rrr{tphilrrxg vroirlrirrr.
D{t nrQt sdngnh6.S vi trf bdl k} lru6chni grr(rng. hQhni gutrrrg nrAy
v$t tai It6i clro
lnh ofraS; vElrlrrhchrlrrg
rrrirrlr.
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