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CHNG 2: PLC S7 X00

(30 cu)

Cu 1 Trn PLC S7x00 ta thy cc cha kha cng tc :

A RUN-P, STOP, MRES, RUN.

B STOP, MRES, RUN, SF.

C BATF, STOP, MRES, RUN-P.

D RUN, STOP, FRCE, MRES.

p n A

Cu 2 Pht biu no sau y l ng:

A RUN-P: trng thi chy RUN, iu khin chng trnh t my tnh v c thsa c chng trnh.

B RUN -P: CPU thc hin chng trnh hay iu khin chng trnh t mytnh.

C RUN-P: trng thi chy RUN, CPU thc hin chng trnh hay iu khin

chng trnh t my tnh, tuy nhin ch c c chng trnh m khngsa c.

D RUN-P: trng thi chy RUN, CPU thc hin chng trnh hay iu khinchng trnh t my tnh.

p n D

Cu 3 Pht biu no l ng khi ni vPLC S7-200 loi cp in p 220VAC:

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A Ng vo tch cc mc 1 mc in p +24VDC (15 - 30VDC). Ng ra lr le c th s dng nhiu cp in p 0V, 24V, 220V

B Ng vo tch cc mc 1 mc in p +24VDC (15-30VDC). Ng ra ltransistor c th s dng nhiu cp in p 0V, 24V, 220V

C Ng vo tch cc mc 1 mc in p 220VAC. Ng ra l rle mt mcin p duy nht 24VDC.

D Ng vo tch cc mc 1 mc in p +24VDC (15-30VDC).. Ng ra ltransistor ch c mt mc in p duy nht l +24VDC.

p n A

Cu 4 Pht biu no l ng khi ni v PLC S7-200 loi cp in p 24VDC:

A Ng vo tch cc mc 1 mc in p 220VAC. Ng ra l transistor, chc mt mc in p duy nht l +24VDC

B Ng vo tch cc mc 1 mc in p +24VDC (15-30VDC). Ng ra lrle c th s dng nhiu mc in p 0V, 24V, 220V

C Ng vo tch cc mc 1 cp in p +24VDC (15 30VDC). Ng ra ltransistor ch c mt cp in p duy nht l +24VDC

D Ng vo tch cc mc 1 cp in p 220VAC. Ng ra l rle c th sdng nhiu cp in p 0V, 24V, 220V

p n C

Cu 5 Loi PLC no m s dng ng ra iu rng xung, hoc output tc cao:

A PLC S7-200 loi cp in p 220VAC, ng ra rle

B PLC S7-300, S7-400

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C PLC S7- 200 loi cp in p 24VDC, ng ra l transistor.

D S7-200 loi cp in p +24VDC (15-30VDC), ng ra l transistor.

p n C

Cu 6 Loi PLC no m s dng ng ra cho ng dng rng xung, hoc output tc cao:

A PLC S7-200 loi cp in p 220VAC, ng ra rle.

B PLC S7-200 loi cp in p 24VAC, ng ra transitor.

C PLC S7-200 loi cp in p 220VAC, ng ra rle.D PLC S7-200 loi cp in p 24VAC, ng ra transitor.

p n A

Cu 7 Ch ci IFM i sau cc tn ca PLC h S7-300 l vit tt ca cm t nosau y:

A Intergrated Function Module

B Integrable Function Mode

C Integrated Function Module

D Intergrated Function Modulle

p n C

Cu 8 Ch ci DP i sau cc tn ca PLC h S7-300 l vit tt ca cm t no sauy:

A Distrubited Portal

B Distrubited Port

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C Disturb Port

D Distrubite Port

p n B

Cu 9 Pht biu no sau y l ng:

A H PLC S7 300 c nhiu loi CPU khc nhau: CPU 312, CPU 314, CPU315... nhng module s dng cng cc b vi x l khc nhau v cc cngonboard cng nh cc khi hm c bit tch hp sn trong h iu hnhphc v vic s dng cc cng vo/ra onboard ny

B H PLC S7 300 c nhiu loi CPU khc nhau: CPU 312, CPU 314, CPU

315... nhng module cng s dng cng mt loi b vi x l v cc cngonboard cng nh cc khi hm c bit tch hp sn trong h iu hnhphc v vic s dng cc cng vo/ra onboard ny

C H PLC S7 300 c nhiu loi CPU khc nhau: CPU 312, CPU 314, CPU315... nhng module cng s dng cc loi b vi x l nhng ging nhau vcng onboard cng nh cc khi hm c bit tch hp sn trong h iuhnh phc v vic s dng cc cng vo/ra onboard ny

D H PLC S7 300 c nhiu loi CPU khc nhau: CPU 312, CPU 314, CPU

315... nhng module cng s dng cng mt loi b vi x l nhng khcnhau v cng onboard cng nh cc khi hm c bit tch hp sn trong hiu hnh phc v vic s dng cc cng vo/ra onboard ny.

p n D

Cu 10 Vic ghp ni cc module m rng ca PLC S7-200 c thc hin:

A Ti a ni c 8 module v vic ghp ni ch din ra ti pha bn phi caPLC.

B Ti a ni c 7 module m rng v ghp ni theo hai bn

C Ti a ni c 8 module m rng v c th hai bn ca PLC

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D Ti a ni c 7 module m rng v vic ghp ni ch din ra pha bnphi ca PLC

p n D

Cu 11: Hnh no sau y ch ng vic ghp ni module m rng cho PLC S7-300:

A

B

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C

D

p n A

Cu 12: Hnh no sau y l ng khi xc nh a ch ca cc module s ca PLCS7-300:

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A

B

C

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D

p n D

Cu 13: Hnh no sau y l ng khi xc nh a ch ca cc module tng t caPLC S7-300:

A

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B

C

D

p n C

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Cu 14: Hnh no m t ng v vng qut chng trnh ca PLC S7 x00:

A

B

C

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D

p n D

Cu 15 Khi thc hin vng qut cc cng vo s v cng ra s s c PLC thchin:

A Thc hin ly d liu t cng vo s trc tip v truyn d liu ra qua cngra s qua b m Q.

B Thc hin ly d liu t cng vo s qua b m I v truyn d liu ra quacng ra s qua b m Q.

C Thc hin ly d liu t cng vo s v truyn d liu ra qua cng ra s mtcch trc tip.

D Thc hin ly d liu t cng vo s qua b m I v truyn d liu ra quacng ra s mt cch trc tip.

p n B

Cu 16 Khi thc hin vng qut cc cng tng t s c PLC thc hin:A Cc lnh truy nhp cng tng t c thc hin qua b m ca cng

tng t.

B Cc lnh truy nhp cng tng t c thc hin trc tip vi cng vt lch khng thng qua b m.

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C Cc lnh truy nhp cng tng t khi c thc hin trc tip vi cng vtl ch khng thng qua b m, khi th c thc hin thng qua b m.

D Cc lnh truy nhp cng tng t c thc hin trc tip vi cng vt lthng qua b m.

p n B

Cu 17 Thi gian vng qut ca PLC S7 x00 l:

A Thi gian cn thit PLC S7 x00 thc hin ht chng trnh.

B Thi gian cn thit PLC S7-X00 thc hin c 1 lnh.

C Thi gian cn thit PLC S7-x00 thc hin mt vng qut.

D Thi gian cn thit PLC S7-x00 thc hin xong mt khi lnh.

p n C

Cu 18: PLC S7-200 loi Loi AC/DC/RLY c c im:

A in p ngun cung cp t 85-264 VAC, tn s 47- 63Hz; in pvo: c ngun cung cp chun cho sensor l 24 VDC. in p ra s

dng qua ngun in ngoi, c th l DC hoc AC nhng khng vtqu 220v. Nu s dng i vi nhng thit b tiu th c cng sutnh khong vi Woat th c th s dng trc tip ngun ca cmbin.

B in p ngun cung cp t 85-264 VAC, tn s 50- 63Hz; in pvo: c ngun cung cp chun cho sensor l +24 VDC. in p ra sdng qua ngun in ngoi, c th l DC hoc AC nhng khng vtqu 220v. Nu s dng i vi nhng thit b tiu th c cng sut

nh khong vi Woat th c th s dng trc tip ngun ca cmbin.

C in p ngun cung cp t 220 380 VAC, tn s 47- 63Hz; in pvo: c ngun cung cp chun cho sensor l 24 VDC. in p ra sdng qua ngun in ngoi, c th l DC hoc AC nhng khng vt

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qu 220v. Nu s dng i vi nhng thit b tiu th c cng sutnh khong vi Woat th c th s dng trc tip ngun ca cmbin.

D in p ngun cung cp t 85-264 VAC, tn s 47- 63Hz; in pvo: c ngun cung cp chun cho sensor l 24 VDC. in p ra sdng qua ngun in ngoi, c th l DC hoc AC nhng khng vtqu 220v. Nu s dng i vi nhng thit b tiu th c cng sutnh khong vi Woat th s dng ngun ca cm bin thng qua bbin i in.

p n A

Cu 19: PLC S7-200 loi DC/DC/DC c c im:

A Ngun nui s dng in p +24VDC (15-30VDC). Ngun nui cm

bin 24VDC. u ra transistor h collector ngun cung cp 24VDC.

B Ngun nui s dng in p 24VDC. Ngun nui cm bin 24VDC.

u ra transistor collector ngun cung cp 24VDC.

C Ngun nui s dng in p 24 VDC. Ngun nui cm bin 24VDC.

u ra transistor h collector ngun cung cp 24VDC.

D Ngun nui s dng in p 24VDC (15-30VDC). Ngun nui cm

bin 24VDC (15-30VDC).. u ra transistor h collector ngun cung

cp 24VDC (15-30VDC)..

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p n C

Cu 20: Ngn xp ca PLC S7-x00 l ngn xp c 8 bt c sp xp nh hnh

no sau:A.

S0: bit th nht ca stack

S1: bit th hai ca stack

S2: bit th ba ca stack

S3: bit th t ca stack

S4: bit th nm ca stack

S5: bit th su ca stack

S6: bit th by ca stack

S7: bit th tm ca stack

B.






S6: bit th su ca stack



C.


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S6: bt th su ca stack






D.

S1: bit th tm castack

S2: bit th by castack

S3: bit th su castack

S4: bit th nm castack

S5: bit th t castack

S6: bit th ba castack

S7: bit th hai castack

S8: bit th nht castack

Cu 20 Ngn xp ca PLC S7-x00 l ngn xp c 8 bt csp xp nh hnh no sau:

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p n B

Cu 21. S b timer trong PLC S7-x00 l:

A Trong S7 200 c 256 timer, trong S7 300 c 128 timer.

B Trong S7 200 c 256 timer, trong S7 300 c 256timer.

C Trong S7 200 c 128 timer, trong S7 300 c 128 timer.

D Trong S7 200 c 128 timer, trong S7 300 c 256 timer.

p n A

Cu 22. S m c cha trong vng nh d liu h thng dng trong Counter caPLC S7-200 c c im g?

A Dng nh phn v c gi tr trong khong t 1 n 999.

B Dng hexa v c gi tr trong khong t 0 n 999.

C Dng nh phn v c gi tr trong khong t 0 n 999.

D Dng hexa v c gi tr trong khong t 1 n 999.

p n C

Cu 23. PLC S7-200 s dng cc phn mm lp trnh c c im g?

A PLC S7-200 s dng phn mm lp trnh Micro Win vi cc version hinnay l v3.2,v4.0 v cc version ny u c th chy m phng trn phnmm m phng PLC.

B PLC S7-200 s dng phn mm lp trnh Micro Win vi cc version hinnay l v3.2,v4.0 v cc version di v4.0 mi c th chy m phng trn

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phn mm m phng PLC.

C PLC S7-200 s dng phn mm lp trnh Micro Win vi cc version hinnay l v3.2,v4.0 v cc version v4.0 tr ln mi c th chy m phngtrn phn mm m phng PLC.

D PLC S7-200 s dng phn mm lp trnh Micro Win vi cc version hinnay l v3.2,v4.0 v ch c version v3.2 mi c th chy m phng trnphn mm m phng PLC.

p n C

Cu 25 PLC S7-200 s dng cc phn mm lp trnh c c im g?

A PLC S7 300 s dng phn mm lp trnh Simatic Manager vi cc versionl v5.2, v5.3, v5.4... tt c cc version ny u c th chy m phng.

B PLC S7 300 s dng phn mm lp trnh Simatic Manager vi cc version

l v5.2, v5.3, v5.4... cc version t v5.4 tr ln mi c th chy m phng.

C PLC S7 300 s dng phn mm lp trnh Simatic Manager vi cc version

l v5.2, v5.3, v5.4... ch c version v5.4 mi c th chy m phng.

D PLC S7 300 s dng phn mm lp trnh Simatic Manager vi cc version

l v5.2, v5.3, v5.4... tt c cc version ny phi c phn mm chy mphng mi c th chy m phng.

p n A

Cu 26 CPU 314 c c im g?

A B nh lm vic 16Kb, chu k lnh 0.1 s

B B nh lm vic 16Kb, chu k lnh 0.3 s

C B nh lm vic 24Kb; chu k lnh 0.3 s

D B nh lm vic 32Kb; chu k lnh 0.3 s

p n C

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Cu 27 CPU 314C-2PtP c c im g?

A

B nh lm vic 48KB, chu k lnh 0.1s; tch hp sn 24DI/16DO,

5AI/2AO, 4 knh xut tc cao, 4 knh c xung tc cao; 2 cng giao

tip.

B B nh lm vic 48KB, chu k lnh 0.3s; tch hp sn 24DI/16DO,


tip.

C B nh lm vic 48KB, chu k lnh 0.3s; tch hp sn 16DI/24DO,


tip.

D B nh lm vic 48KB, chu k lnh 0.3s; tch hp sn 24DI/16DO,5AI/2AO, 4 knh xut tc cao, 4 knh c xung tc cao; 2 cng giaotip.

p n A

Cu 28 FM355 PID Module l module c chc nng g?

A Module iu khin PID, 4 knh iu khin PID, 4AI/8DI/4AO.

B Module iu khin PID, 4 knh iu khin PID, 4AI/8DI/8AO.

C Module iu khin PID, 4 knh iu khin PID, 8AI/8DI/4AO.

D Module iu khin PID, 4 knh iu khin PID, 4AI/4DI/4AO.

p n A

Cu 29 Module FM353 Fstepper Motor l module c c im g?

A Module iu khin ng c servo 4DI/4DO

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B Module iu khin ng c bc

C Module iu khin ng c bc 4DI/4DO

D Module iu khin ng c servo 4DI/1DO

p n C

Cu 30 Theo cch u ni cho PLC S7 200 th S7 200 c phn ra lm my

loi? gm nhng loi no?

A Gm 2 loi. Loi AC/DC/RLY v DC/DC/DC.

B Gm 2 loi. Loi AC/AC/AC v DC/DC/DC.

C Gm nhiu loi v d: CPU 212, 214, 224, 226

D Gm 2 loi. Loi cp in p xoay chiu v loi cp in mt chiu

p n A

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Cu 31 Cho s u ni ca PLC sau, cho bit l s u ni cho loi PLC

no?

A PLC S7 200 loi AC/DC/RELAY

B PLC S7 300 loi DC/DC/DC

C PLC S7 200 loi AC/DC/RLY

D C ba loi trn.p n C

Cu 32. Cho s u ni ca PLC sau, cho bit l s u ni cho loi PLC

no?

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A CPU S7 200 loi DC/DC/RLY

B CPU S7 300 loi DC/DC/DCC CPU S7 200 loi DC/DC/DC

D CPU S7 200 loi AC/DC/RLY

p n C

Cu 33 Cp PPI dng u ni cho PLC S7 200 v my tnh hay my lp trnh cchc nng g?

A Dng chng trnh t my tnh hay my lp trnh sang PLC vupload chng trnh t PLC tr li my tnh hay my lp trnh.

B Dng giao tip gia ngi lp trnh v PLC thng qua chng trnhlp trnh cho PLC.

C Dng chuyn i tn hiu s sang tn hiu tng t v ngc li PLC c th giao tip c vi my tnh hay my lp trnh.

D Dng kt ni mng PLC

p n C

Cu 34 Cp PPI s dng kt ni PLC S7- 200 vi my tnh hay my lp trnh lvit tt ca t no?

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A Point to Point Interface

B Point Point Interface.

C Point of Point Interface.

D C ba p n trn.

p n A

Cu 35 Cp kt ni PPI c hai u l RS 232 v RS 485 c ni nh th no?

A u ni RS 232 c ni vo my tnh hay my lp trnh; u ni RS 485c ni vo PLC.

B u ni RS 485 c ni vo my tnh hay my lp trnh; u ni RS 232c ni vo PLC.

C C th thay i v tr u cho hai u cp.

D C ba p n trn.

p n A

Cu 36. Cp PPI vi giao tip cng COM c tc giao tip mc nh l bao nhiu?

A 9600 baud.

B 19200 baud/s.

C 4800 baud.

D 9600 baud/s.

p n A

Cu 37. Cp MPI dng u ni cho PLC S7 300 v my tnh hay my lp trnh cchc nng g?

A Dng chng trnh t my tnh hay my lp trnh sang PLC v uploadchng trnh t PLC tr li my tnh hay my lp trnh.

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B Dng giao tip gia ngi lp trnh v PLC thng qua chng trnh lp trnhcho PLC.

C Dng chuyn i tn hiu s sang tn hiu tng t v ngc li PLC cth giao tip c vi my tnh hay my lp trnh.

D Dng kt ni mng PLC.

p n C

Cu 38 Cp MPI s dng kt ni PLC S7- 300 vi my tnh hay my lp trnh lvit tt ca t no?

A Multi media Point Interface

B Multi of Point Interface.

C Multi Point Interface.

D Multi to Point Interface.

p n C

Cu 39 Cp kt ni MPI c hai u l RS 232 v RS 485 c ni nh th no?

A u ni RS 485 c ni vo my tnh hay my lp trnh; u ni RS 232c ni vo PLC.

B C th thay i v tr u cho hai u cp.

C u ni RS 232 c ni vo my tnh hay my lp trnh; u ni RS 485c ni vo PLC.

D C ba p n trn.

p n C

Cu 40 Cp MPI vi giao tip cng COM c tc giao tip mc nh l baonhiu?

A 19200 baud/s

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B 9600 baud

C 9600 baud/s

D 19200 baud

p n D

Cu 41 Cu lnh sau y to ra thi gian l bao nhiu?

A 30s

B 300s

C 3000s

D 3s

p n B

Cu 42 Cho bit on lnh sau thc hin cng vic g?

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A Sau thi gian T37 = 2s trng thi SCR1 kt thc v trng thi SCR2 hotng v sau thi gian T38 = 25s th trng thi SCR3 hot ng thit lpcc u ra Q0.4; Q0,5; Q0.2.

B Trng thi SCR1;SCR2 v SCR3 hot ng bt cc u ra Q0.4; Q0,5;Q0.2 trong thi gian 2s, 25s.

C Cc u ra Q0.4; Q0.5; Q0.2 c bt ln trong thi gian 25s.

D Khng c p n no ng.

p n

Cu 43 Kt qu ca on lnh sau l g?

L IW 10

L MW 14+I

T DB1.MDBM25

A Cng hai s nguyn 32 bit cha trong IW10, MW14 v ct kt qu

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vo nh DBW25 ca khi d liu DB1.

B Cng hai s nguyn 16 bit cha trong IW0, MW14 v ct kt qu vo nh DB1.DBW25.

C Cng hai s nguyn 32bit cha trong IW10, MW14 v ct kt quvo nh DB1.DBW25.

D Cng hai s nguyn 16 bit cha trong IW0, MW14 v ct kt quvo nh DBW25 ca khi d liu DB1.

p n D

Cu 44 on lnh sau thc hin cho kt qu l g?

L MD 10

L MD 14

/D

T MD20

A Thc hin chia 2 s nguyn MD10:MD14 v kt qu ct vo nh MD20.

B Thc hin chia 2 s nguyn 16 bit MD10:MD14 v kt qu ct vo nh

MD20.

C Thc hin chia 2 s nguyn 32 bit MD10:MD14 v kt qu ct vo nhMD20.

D Thc hin chia 2 s nguyn 8 bit MD10:MD14 v kt qu ct vo nhMD20.

p n C

Cu 45 on lnh sau khi thc hin s cho kt qu g?

A Q4.0

L MD10

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L -1

-D

X < > 0

= Q4.0

A Nu s nguyn 16 bit x trong MD10 -1 th o trng thi n Q4.0

B Nu s nguyn 32 bit x trong MD10 0 th trng thi n Q4.0 sng.

C Nu s nguyn 16 bit x trong MD10 0 th o trng thi n Q4.0

D Nu s nguyn 32 bit x trong MD10 -1 th o trng thi n Q4.0

p n D


A Q4.0

L MD10

L 2.8

-R

X >= 0

= Q4.0

A Nu s thc x trong MD10 tha mn >= 0 th o trng thi n Q4.0

B Nu s thc x trong MD10 tha mn >= 2.8 th o trng thi nQ4.0

C Nu s thc x trong MD10 tha mn >= 0 th trng thi n Q4.0

sng

D Nu s thc x trong MD10 tha mn >= -2.8 th o trng thi nQ4.0

p n B

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L PIW304

ITD

DTR

L 3276.7

/R

T MD0

A i s nguyn 16 bits c t cng tng t PIW304 thnh s nguyn 32bitsc gi tr ng bng gi tr in p ti cng v kt qu ct vo nh MD0.

B i s nguyn 16 bits c t cng tng t PIW304 thnh s thc c gi trng bng gi tr in p ti cng v kt qu ct vo nh MD0.

C i s nguyn 32 bits c t cng tng t PIW304 thnh s nguyn 32bitsc gi tr ng bng gi tr in p ti cng v kt qu ct vo nh MD0.

D i s nguyn 32 bits c t cng tng t PIW304 thnh s thc c gi trng bng gi tr in p ti cng v kt qu ct vo nh MD0.

p n B

Cu 48 Sau khi thc hin on chng trnh sau th kt qu s l g?

L 1 BEC

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L MW0

+I

T MW0

L 1000

< > I

L 0

T MW0

AN Q4.0

= Q4.0

BEU

A Chng trnh s i trng thi ca cng ra Q4.0 vng qut th 1000v khng lm g cc vng khc.

B Chng trnh s i trng thi ca cng ra Q4.0 cui chng trnh.

C Chng trnh s i trng thi ca cng ra Q4.0 vng qut c th t

chia ht cho 1000 v khng lm g cc vng qut khc.D Chng trnh s i trng thi ca cng ra Q4.0 1000 vng qut

u tin v khng lm g cc vng qut tip theo.

p n C

Cu 49 on chng trnh sau s to thi gian bao nhiu?Loi timer s dng l g?

A I4.0

FR T1

A I4.0

L W#16#2127

A Thi gian tr l 2127s v loi timer tr theo sn ln.B Thi gian tr l 2*127s v loi theo sn ln timer tr.

C Thi gian tr l 127s v loi timer tr theo sn ln c nh.

D Thi gian tr l 127s v loi timer tr theo sn ln.

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p n D

Cu 50 Khi thc hin on chng trnh sau kt qu l gi?

OPN DB3

OPN DB5

L DBLG

L DILG

> D

= Q1.0

A Nu di ca DBLG ln hn ca DILG th n Q1.0 s sng.

B Nu di ca DB3 ln hn DB5 th n Q1.0 s sng.

C Nu di ca DB5 ln hn DB3 th n Q1.0 s sng.

D Nu di ca DILG ln hn ca DBLG th n Q1.0 s sng

p n B

Cu 51 on chng trnh sau khi thc hin kt qu l g?

L #OB1_MAX_CYCLE

L 59

> I

L #OB1_MIN_CYCLE

L 45

- I

A < 0

A Q0.0

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A Chng trnh vit cho OB1 s bo sng n Q1.0 nu c mt vng qut thchin trong 59s v c mt vng qut thc hin trong 45s.

B Chng trnh vit cho OB1 s bo sng n Q1.0 nu c mt vng qut thchin trong lu hn 59s v c mt vng qut thc hin nhanh hn 45s.

C Chng trnh vit cho OB1 s bo sng n Q1.0 nu c mt vng qut thchin trong trong khong t 45s n 59s.

D Khng c p n no ng.

p n B

Cu 52 Kt qu ca on chng trnh sau khi thc hin l g?

CALL FB 1,DB2

CONG := PIW306

KET_QUA := # analog_value

OPN DB2

L DBD202

L #analog_value

< R

= Q0.0

L DBW206

L 50

= Q0.1

A Cho n Q0.0 sng nu gi tr c c ti cng tng t PIW306 nh hngi tr trung bnh 50 gi tr c c mi nht; ngc li cho n Q0.1 sngnu trong b m cha 50 gi tr.

B Cho n Q0.0 sng nu gi tr c c ti cng tng t PIW306 nh hngi tr trung bnh 50 gi tr c c; ngc li cho n Q0.1 sng nu trong

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b m cha 50 gi tr.

C Cho n Q0.0 sng nu gi tr c c ti cng tng t PIW306 bng gitr trung bnh 50 gi tr c c mi nht; ngc li cho n Q0.1 sng nutrong b m cha 50 gi tr.

D Cho n Q0.0 sng nu gi tr c c ti cng tng t PIW306 nh hn50; ngc li cho n Q0.1 sng nu trong b m cha 50.

p n A

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