Cov txheej txheem:
- Tus qauv kev sib raug zoo twg yog feem ntau siv hauv daim duab ua ntej?
- Kev sib raug zoo ua ntej hauv qhov kev npaj yog dab tsi?
- Txoj kev tseem ceeb hauv PDM yog dab tsi?
- plaub txoj kev kos duab ua ntej yog dab tsi?
Video: In pdm twg ntawm cov kev sib raug zoo hauv qab no tsis tshua siv?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Finish-Finish: Hauv qhov kev vam khom no, muaj kev sib raug zoo ntawm cov hnub kawg ntawm kev ua ub no. Start-Finish: Hauv qhov kev vam khom no, muaj kev sib raug zoo ntawm qhov pib ntawm ib qho haujlwm thiab hnub kawg ntawm kev ua tiav. Qhov kev cia siab no tsis tshua siv.
Tus qauv kev sib raug zoo twg yog feem ntau siv hauv daim duab ua ntej?
In PDM, finish-to-start yog hom kev sib raug zoo ua ntej tshaj plaws.
Kev sib raug zoo ua ntej hauv qhov kev npaj yog dab tsi?
Kev sib raug zoo ua ntej tshaj plaws yog thaum ib qho haujlwm tsis tuaj yeem pib kom txog thaum lwm qhov haujlwm tiav. Nyob rau hauv feem ntau lub sij hawm qhov no yog kev sib raug zoo uas muaj nyob rau hauv yuav luag tag nrho cov (yog tsis yog tag nrho). Qhov no yog hu ua Finish-to-Start kev sib raug zoo.
Txoj kev tseem ceeb hauv PDM yog dab tsi?
txoj kev tseem ceeb txhais tau tias tias txhua yam dej num ntawm txoj kev yuav tsum pib thiab ua tiav raws li hnub teem sijhawm. Kev saib xyuas cov dej num ntawm txoj kev tseem ceeb ua kom ntseeg tau tias tsis muaj kev poob qis hauv lub sijhawm.
plaub txoj kev kos duab ua ntej yog dab tsi?
4 hom kev sib raug zoo hauv cov qauv kos duab ua ntej yog: Finish-to-Start (FS) kev vam khom, Finish-to-Finish (FF) dependency, Pib-rau-Start (SS) kev vam meej, thiab.
Pom zoo:
Puas yog kev sib raug zoo ntawm kev sib raug zoo?
Monogamy yog kev sib raug zoo nrog ib tus khub ntawm ib lub sijhawm, tsis yog ntau tus neeg koom tes. Kev sib raug zoo monogamous tuaj yeem yog kev sib deev lossis kev xav, tab sis feem ntau yog ob qho tib si Ntau qhov kev sib raug zoo niaj hnub no yog monogamous.
Kev sib raug zoo hauv kev sib raug zoo yog dab tsi?
Reciprocity yog txheej txheem ntawm kev sib pauv khoom nrog lwm tus neeg kom tau txais txiaj ntsig zoo sib xws Cov qauv ntawm kev sib raug zoo, qee zaum hu ua txoj cai ntawm kev sib raug zoo, yog kev sib raug zoo. qhov twg yog tias ib tug neeg ua ib yam dab tsi rau koj, koj mam li xav tias yuav tsum tau rov qab los.
Qhov twg ntawm cov kuab tshuaj hauv qab no yog siv rau hauv kev sib txuas ntawm chlorofluorocarbon?
Dichloromethane yog ntau yam kev lag luam hnyav. Tus kws tshawb fawb Belgian Frédéric Swarts pioneer lub synthesis ntawm CFCs nyob rau hauv 1890s . CFCs ua li cas? CFCs thiab HCFCs feem ntau yog tsim los ntawm kev sib pauv halogen pib los ntawm chlorinated methanes thiab ethanesCov derivatives brominated yog tsim los ntawm cov tshuaj dawb-radical ntawm chlorofluorocarbons, hloov C-H daim ntawv cog lus nrog C- Br daim ntawv cog lus.
Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
Nyob rau hauv qhov tsis ncaj ncees PN-kho qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog zero, vim tias sib npaug tab sis cov neeg nqa khoom hla hla kev sib tshuam . Thaum pn kev sib tshuam tsis ncaj ncees qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
Yuav ua li cas thiaj nrhiav tau kev sib raug zoo ntawm kev sib raug zoo?
Hauv txoj hauv kev, kev sib raug zoo R yog qhov sib txawv, tshwj xeeb yog rau txhua tus a thiab b hauv A, yog R (x, y) nrog x ≠ y, ces R (y, x) yuav tsum tsis tuav, lossis, sib npaug, yog R(x, y) thiab R(y, x), ces x=y . Dab tsi yog qhov kev sib raug zoo ntawm kev sib raug zoo hauv lej?
