Nrog rau qhov tseem ceeb tswj qhov system, koj tuaj yeem taug qab tag nrho koj cov yuam sij, txwv tsis pub leej twg tuaj yeem nkag mus tsis tau, thiab tswj xyuas thaum twg thiab qhov twg koj cov yuam sij siv tau. Nrog lub peev xwm taug qab cov yuam sij hauv qhov kev tswj hwm qhov tseem ceeb no, koj yuav tsis tas yuav nkim sij hawm nrhiav cov yuam sij ploj lossis yuav cov tshiab.