Qhov tseem ceeb ntawm kev ua tsov ua rog thiab kev sib haum xeeb
Tsov rog System yog ua los ntawm kev sib tshuam ua haujlwm uas ua rau muaj kev ua tsov rog.
Tsov rog System yog ua los ntawm kev sib tshuam ua haujlwm uas ua rau muaj kev ua tsov rog.
Cov kev cog lus tseem ceeb rau kev tswj tsov rog uas tam sim no nyob rau hauv dag zog yuam yog tsis lees paub los ntawm ob peb lub teb chaws.
Cov ntawv nyeem, cov khoom luam tawm, cov chaw hais lus, xov tooj cua thiab TV, cov xov xwm hluav taws xob, cov rooj sablaj, thiab lwmyam yuav ua haujlwm rau cov lus hais txog cov dab neeg thiab cov tsev kawm ntawv uas muaj kev sib ntaus sib tua.