Txo qhov hnyav ntawm lub pob, ib puag ncig thiab cov lag luam muaj txiaj ntsig tau txais txiaj ntsig, lub teeb yuag yog tam sim no cov lus tshaj lij kev lag luam, siv los piav qhia txog kev siv cov khoom siv tsawg dua los tsim ntim, ntim cov khoom poob phaus, feem ntau, cov hwj yas, yas Canisters, yas hoses thiab cov kaus mom yas thiab lwm yam ntawm cov thawv ntim khoom zoo nkauj kom yooj yim rau lub hom phiaj ntawm qhov hnyav poob.
Thaum lub hnab yas ua kom tiav qhov hnyav-txo, cov khoom siv roj hmab tsawg dua yog qhov xav tau nyob rau hauv cov txheej txheem txhaj tshuaj thiab lub teeb ntim khoom hnyav dua yog ib puag ncig tus phooj ywg vim kev siv cov khoom ntim khoom tsawg dua nws tsis yog nws tsuas yog ua kom zoo dua, cov tshuaj pleev ib ce me me kuj tseem muaj ntau qhov tsim nyog. qhov zoo, xws li tuaj yeem txo cov nqi ntawm cov khoom.
