1. Tsis txhob caum lub ntsej muag ntau dhau
Thaum yuav cov kav dej pe, tsis txhob ua raws li kev zoo nkauj ntawm cov kav dej ntau dhau, vim tias ntau cov kav dej yuav ntxiv nrog cov khoom siv siab thaum lub sijhawm tsim khoom, thiab qhov ntau ntxiv, qhov smoother lawv cov phab ntsa sab nrauv yuav dhau los ua. Tab sis ntau tus neeg tsis paub qhov tseeb no, thiab xav tias qhov zoo ntawm lub raj nrog lub ntsej muag zoo thiab ua tiav zoo. Tab sis qhov tseeb, qhov toughness ntawm cov yeeb nkab zoo li no tsis zoo heev, vim tias cov khoom siv siab yuav txo nws tus kheej lub nplhaib nruj.
2. Tsis txhob caum tus nqi pheej yig heev
Hauv cov txheej txheem ntawm kev yuav cov kav dej pe, tus nqi ib txwm yog qhov tseem ceeb ntawm cov pej xeem, tab sis tus nqi pheej yig tsis tuaj yeem ua raws li ntau dhau. Kev xaiv yog los sib piv qhov zoo, thiab tus nqi yuav tsum tau muab piv rau hauv cov xwm txheej ntawm tib yam zoo. Tam sim no muaj ntau lub tuam txhab tsim khoom lag luam uas yuav nyiam cov neeg siv khoom nrog tus nqi qis, thiab siv qee txoj hauv kev ntxiv cov khoom siv rov ua dua thaum tsim khoom. Cov yeeb nkab, thiab tom qab siv cov yeeb nkab no, yuav muaj ntau yam teeb meem.
3. Tsis txhob caum cov khoom lag luam muaj npe ntau dhau
Muaj ntau hom PE kav hauv khw. Txawm hais tias qhov zoo ntawm cov khoom lag luam tuaj yeem lav tau, qhov no tsis yog cov khoom siv niaj hnub. Nws yog ib qho khoom lag luam thiab cov khoom siv mining uas yuav tsum tau ua los ntawm qhov zoo, yog li tsis txhob ua qhov muag tsis pom kev lag luam nto moo.