1. Xav txog kev siv ib puag ncig ntawm kev sib txawv hnub ci zog thiab cov hnub ci hluav taws xob hauv zos, thiab lwm yam;
2. Lub zog tag nrho yuav tsum tau nqa los ntawm cov neeg muaj hwj chim ntau tiam neeg thiab lub sijhawm ua haujlwm ntawm lub nra txhua hnub;
3. Xav txog cov zis hluav taws xob ntawm cov kab ke thiab saib seb nws puas tsim nyog rau DC lossis AC;
4. Yog tias huab cua los nag yam tsis muaj hnub ci, cov kab ke yuav tsum tau muab hluav taws xob txuas ntxiv rau ob peb hnub;
5. Kev siv ntawm cov khoom siv hluav taws xob hauv tsev kuj yuav tsum xav txog cov khoom siv hluav taws xob, seb cov cuab yeej siv hluav taws xob tsis zoo, kev siv hluav taws xob tsis kam, kev kho mob uas pib tam sim no thiab lwm yam.
Lub Sijhawm Post: Dec-17-2020