Thaum nws los txog rau kev yuav khoom siv, nws yog ib qho tseem ceeb kom nrhiav tau cov channel uas tsis yog tsuas yog tus nqi -}}}}}} Nws ua tau zoo. Piv cov nqi ntawm cov chaw tsim khoom sib txawv yog qhov zoo tshaj plaws los xyuas kom koj tau txais qhov tseem ceeb tshaj plaws, tab sis nws yog qhov tseem ceeb uas yuav tsum tau siv rau kev tiv thaiv zoo.
Nws yog ib qho muaj rau qee cov tuam ntxhab los muab cov nqi tsim qis rau lub hnab tsim kho, tab sis cov hnab no yuav tsis ruaj khov lossis txhim khu kev qha zoo li cov khw muag khoom ntau dua. Kev nqis peev hauv cov hnab ntim siab dua yuav raug nqi ntau dua, tab sis lawv yuav tiv taus qhov ntev dua thiab tuaj yeem tiv thaiv cov kev xav tau ua haujlwm.
Thaum piv cov nqi, nws kuj tseem ceeb uas yuav tau xav txog cov txiaj ntsig ntxiv uas tuaj yeem yuav nrog kev yuav khoom ntawm cov chaw tsim khoom. Piv txwv li, qee cov tuam ntxhab yuav muab cov nyiaj cheb tshwj xeeb lossis tshwj xeeb rau cov neeg siv khoom, uas tuaj yeem qis dua tus nqi tag nrho.
Hauv kev xaus, thaum xaiv cov channel rau kev yuav lub hnab uas siv, nws yog ib qho tseem ceeb kom pom qhov sib npaug ntawm cov nqi thiab cov khoom zoo. Los ntawm kev sib piv cov nqi los ntawm cov chaw tsim khoom sib txawv thiab txiav txim siab cov txiaj ntsig ntxiv, koj tuaj yeem ntseeg tau tias koj tau txais qhov zoo tshaj plaws rau koj cov nyiaj. Nco ntsoov, qhov zoo yuav tsum yog qhov tseem ceeb tshaj plaws thaum nws los txog rau cov ntaub ntawv tsim kho.
