Muaj cov txiv hmab txiv ntoo thiab zaub ntawm ntau yam khoom tawg rau ntawm cov khoom noj thiab cov zaub yas raws li cov khoom lag luam yas raws li cov khoom noj khoom haus tshiab {{2}
Vim yog cov khoom siv tsiaj zoo heev, cov txiv hmab txiv ntoo roj thiab khov kho cov khoom siv tshiab thiab yog li, dab tsi yog cov tais diav tshiab hauv cov khw muag khoom?
1.} Ua si lub luag haujlwm ntawm cov khoom tiv thaiv
Qee cov txiv hmab txiv ntoo tshiab los yog khaws cov txiv hmab txiv ntoo ncaj qha, tom qab cov khoom siv txiv hmab txiv ntoo tsis puas ntawm lub neej ntawm cov txiv hmab txiv ntoo .
2.} Ua si lub luag haujlwm hauv kev txhawb nqa khoom muag
Lub tshuab nqus tsev tsim cov tais rau cov zaub tshiab thiab cov txiv hmab txiv ntoo hauv cov neeg siv khoom thiab ua kom zoo nkauj ntxiv thiab txhawb nqa kev siv .
3.}} Nrog cov kev txhim kho ntawm cov neeg muaj sia nyob hauv lub thawv huv si, thiab ua khub, thiab tsuas yog ua ke huv si, thiab tsuas yog ua ke huv si, thiab tsuas yog ua ke huv si, thiab tsuas yog ua ke huv si Txiv hmab txiv ntoo thiab zaub, zam kev khib tshwm los ntawm txiv hmab txiv ntoo oxidation thiab lwj {}}
4.}} Cov tais tshiab, txhawm rau paub cov khoom noj tshiab, cov tais diav tau sau nrog cov huab cua hloov tshiab tshiab-khaws cia lub thawv
{{05. Ua lub luag haujlwm hauv kev txhim kho cov khoom lag luam zoo
Lub ntsej muag sab nraud zoo tuaj yeem zoo dua tus nqi ntawm cov khoom lag luam, txhim kho nws cov qib, thiab muab cov khoom lag luam puas nce ntxiv rau .
