2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib thaiv thiab tackle lossis tsuas yog tackle yog ib qho txheej txheem ntawm ob lossis ntau dua rubeys nrog hlua lossis cable threaded ntawm lawv, feem ntau yog siv los nqa hnyav. Lub pulleys tau sib sau ua ke los tsim cov blocks thiab tom qab ntawd cov blocks tau ua ke kom ib qho ruaj khov thiab ib qho txav nrog lub nra.
Lub ntsiab lus ntawm kev thaiv thiab kev sib tw yog dab tsi?
block thiab tackle. [blŏk] Ib qho kev npaj ntawm rubeys thiab hlua siv los txo cov quab yuam uas xav tau los txav cov khoom hnyav. Ib lub pulley yog txuas rau lub load, thiab hlua los yog chains txuas no pulley mus rau ib tug ruaj pulley. Txhua lub rubey yuav muaj ntau qhov zawj lossis lub log rau txoj hlua hla ntau zaus.
piv txwv ntawm kev thaiv thiab tackle yog dab tsi?
Lub ntsiab lus ntawm thaiv thiab tackle yog ib qho ntawm cov rub. Ib qho piv txwv ntawm kev thaiv thiab tackle yog ib txoj kev ntawm kev nqa cov khoom hnyav ntawm cov hlau siv cov cables thiab pulleys. … Ib lub laub txuas nrog rau lub nra, thiab txoj hlua lossis cov saw txuas txuas lub rubey mus rau lub rubey ruaj khov.
thaiv thiab tackle txhais li cas hauv kev lag luam?
Hauv kev lag luam, peb txhua tus tau hnov txog cov kab lus "thaiv thiab tackle." Nws lub ntsiab lus: Tau rau qhov pib thiab xa cov txiaj ntsig. Suab zoo nyob rau hauv txoj kev xav, tab sis tsis yog ib txwm yooj yim rau kev xyaum. Ua raws li kev qhuab ntuas thiab xa tawm tsam qhov kev cia siab tsis tu ncua yog qhov nyuaj, tshwj xeeb tshaj yog hauv kev lag luam no.
Vim li cas thiaj hu ua thaiv thiab tackle?
Ib tug txiv neej nrog lub laub nqa tau los ntawm rub rov qab lossis nqisib txoj hlua, es tsis txhob nqa. Siv ib lossis ntau lub rubeys hauv lub network tau txais txiaj ntsig zoo ntawm kev siv tshuab, muab ntau lub zog siv los nqa lub nra. Thaum ua li no, hu ua thaiv thiab tackle.
Pom zoo:
Thaum lub sijhawm nitration ntawm aniline cov amino pawg tiv thaiv los ntawm?
Cov nyom rau nitration ntawm aniline tau kov yeej los ntawm kev tiv thaiv ntawm cov amino pawg los ntawm acetylation. Cov acetyl pawg txo cov reactivity ntawm lub nplhaib thiab yog li nws oxidation tsis tshwm sim yooj yim nrog nitric acid HNO3.
Puas yog kev tiv thaiv kev tiv thaiv tsis sib txawv ntawm tus kheej?
Peb xav tias lub cev tiv thaiv kab mob ua tiav kev ntxub ntxaug tus kheej tsis yog tus kheej, thaum hloov pauv kev tiv thaiv, tsis yog los ntawm kev lees paub qhov sib txawv ntawm tus kheej thiab txawv teb chaws antigens, tab sis los ntawm kev pom qhov avidity ntawm T cell activation.
Vim li cas cov lus qhuab qhia ntawm kev tiv thaiv kev tiv thaiv?
Cov lus qhuab qhia kev cai lij choj ntawm kev tiv thaiv kev tiv thaiv ib puag ncig muab tsoomfwv lub koomhaum txiav txim siab xaiv xaiv kev tiv thaiv los ntawm kev foob pej xeem lossis foob foob foob. Qhov no txhais tau tias tsis muaj leej twg tuaj yeem foob tsoomfwv yam tsis muaj tsoomfwv tso cai ua li ntawd.
Ntawm dab tsi yog qhov kev tiv thaiv ntawm tus neeg xyuas pib nyob ntawm?
Qhov kev tawm tsam ntawm tus neeg xyuas pib nyob ntawm thaj tsam ntawm tus neeg xyuas pib, qhov ntev ntawm tus neeg xyuas pib, thiab nws qhov kev tiv thaiv. Nws yog ib qho tseem ceeb kom nco ntsoov tias hluav taws xob conductivity thiab resistivity yog inversely proportional, txhais tau hais tias qhov ntau conductive ib yam dab tsi yog qhov tsawg resistive nws yog.
Los ntawm qhov kev txiav txim ntawm enzymes tus nqi ntawm cov tshuaj tiv thaiv biochemical?
Enzymes yog cov khoom siv roj ntsha. Catalysts txo qis lub zog ua kom muaj zog rau cov tshuaj tiv thaiv. Qhov qis dua lub zog ua kom muaj zog rau cov tshuaj tiv thaiv, qhov nrawm dua. Yog li enzymes nrawm cov tshuaj tiv thaiv los ntawm kev ua kom lub zog qis.
