Qhia ib lub ntsuas dej noo noo tshiab uas tuaj yeem ntsuas cov khoom siv hauv tsev
Cov khoom no yog hom DC tsis kam (tus pin hom) cov khoom ntsuas dej noo, feem ntau siv los ntsuas cov dej noo ntawm cov ntoo lossis cov khoom siv hauv tsev. Cov dej noo ntawm cov khoom yog tso tawm ncaj qha raws li feem pua. Cov cuab yeej muaj cov yam ntxwv tsis zoo ntawm 7 ntau hom ntoo thiab cov khoom siv hauv tsev. Qhov kev ntsuas no tuaj yeem muab lub hauv paus rau kev xav tau kom qhuav ntxiv.
Ntxiv nrog rau kev ntsuas cov dej noo ntawm cov khoom, cov av noo thiab qhov kub thiab txias kuj tseem tuaj yeem ntsuas kom qhov chaw qhuav tuaj yeem ntsuas ncaj qha rau ntawm qhov chaw.
