Xaiv thiab them nrog pov thawj
Cov lus qhia pom zoo kom xaiv cov khoom uas tau ntawv pov thawj los ntawm lub chaw kuaj mob uas tau lees paub thoob tebchaws. Nws kuj qhia kom ua raws li cov lus qhia ntawm cov chaw tsim khoom es tsis txhob sib xyaw cov roj teeb, cov chargers lossis kev hloov kho uas tsis tau lees paub.
Khaws qhov them kom pom tseeb
ULSE qhia kom tsis txhob them hauv qab lub hauv ncoo, pam vov lossis hauv hnab thiab pom zoo kom khaws cov khoom siv kom deb ntawm qhov kub thiab txias heev thiab cov khoom siv hluav taws xob. Cov neeg siv yuav tsum saib xyuas qhov o, qhov tawg, suab txawv txawv, cua sov ntau dhau, ntxhiab lossis pa luam yeeb.
Kev pov tseg yog ib feem ntawm kev nyab xeeb
Tsab xov xwm hais tias cov roj teeb yuav tsum tsis txhob muab tso rau hauv cov khib nyiab pej xeem lossis cov kwj deg rov ua dua tshiab. Cov kev cai hauv zos thiab cov channel rov ua dua tshiab roj teeb tsim nyog yuav tsum tau kuaj xyuas ua ntej pov tseg.