1. Cov neeg siv hluav taws xob hnub ci: (1) Cov khoom siv hluav taws xob me me xws li 10-100W yog siv rau thaj chaw deb tsis muaj hluav taws xob, xws li toj siab, Islands tuaj, thaj chaw pastoral, ciam teb, thiab lwm yam rau kev ua tub rog thiab pej xeem lub neej, xws li teeb pom kev zoo, TVs, tape recorders, thiab lwm yam .;(2) 3-...
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