Kev nkag siab yuam kev 1: Txawm li cas los xij, qhov ntsuas kub ntawm lub tub yees yog qis dua 0 degree, thiab nws yuav tsis deteriorate yog tias koj muab tso rau hauv.
Yog tias peb ua tib zoo saib ntawm kev ntim cov khoom noj ceev - khov, peb yuav pom tias cov khoom noj khov sai sai yuav tsum tau muab khaws cia ntawm -18 degree, tab sis feem ntau ntawm peb lub tub yees hauv tsev tsawg dua qhov ntsuas kub no, feem ntau tsuas yog li -10 degree. Nyob nruab nrab ntawm -18℃thiab -25 degree, qhov zoo ntawm cov khoom noj khov sai yuav ruaj khov. Yog tias nws siab tshaj qhov ntsuas kub no, lub txee lub neej yuav luv luv raws li. Yog li ntawd, yog tias lub tub yees hauv koj lub tsev tsis tuaj yeem ncav cuag -18 degree, nws yog qhov zoo tshaj kom noj cov khoom noj khov sai li sai tau tom qab qhib, txwv tsis pub nws yuav yooj yim deteriorate.
Tswvyim 2: Nws yog qhov zoo rau khaws cov khoom noj khov nrog rau lwm yam khoom noj nyoos.
Ceev- cov zaub mov khov yuav tsum zam nrog lwm cov khoom noj nyoos, xws li cov ntses tshiab, nqaij, thiab lwm yam, sim cais thiab khaws cia, txwv tsis pub nws yooj yim kis kab mob ntawm ib leeg thiab ua rau cov zaub mov tsis zoo.
