1. Tus Kheej Kev Tshawb Xyuas, Cov Khoom Tiv Thaiv thiab Cov Txheej Txheem Ceev
Siv cov khoom tiv thaiv tus kheej. Zam kev ua pa tawm, pos huab lossis roj. Xyuas kom muaj cua txaus.
Tshem tawm txhua qhov chaw ntawm ignition. Kev khiav tawm tsam cov chaw nyab xeeb. Ceev faj ntawm cov vapors accumulating raumuab cov khoom tawg ntau. Vapors tuaj yeem txuas ntxiv hauv cov chaw qis.
2. Ib puag ncig kev ceev faj
Tiv thaiv kom muaj xau ntxiv lossis txeej yog tias muaj kev nyab xeeb ua. Tsis txhob cia cov khoom nkag mus tso dej.
3. Txoj kev thiab cov ntaub ntawv rau cov khoom lag luam thiab tu
Muaj txeej, thiab tom qab ntawd sau nrog cov tshuab hluav taws xob tiv thaiv hluav taws xob lossis txhuam hniav ntub thiabTso rau hauv cov thawv rau pov tseg raws li cov cai hauv zos