1. Txawm hais tias cov nyhuv luam ntawv ntawm lub thermal hloov tshuab yog zoo heev, tsis yog txhua yam ntaub ntawv tuaj yeem luam tawm.
2. Xaiv cov ntaub ntawv xim tsaus kom tsawg li tsawg tau thaum lub sijhawm luam ntawv.Xws li daim ntaub dub
3. Thaum lub sij hawm luam ntawv, nws yog ib qho tseem ceeb heev kom tuav lub sij hawm thiab kub raws li cov khoom sib txawv.
Lub tshuab hloov hluav taws xob yuav tsum tau siv nruj raws li qhov yuav tsum tau ua thaum siv, kom muaj teeb meem tsawg dua.
