Lub qhov ncauj qhov ntswg twg tuaj yeem siv rov ua haujlwm yam xyuam xim? Saib cov lus qhia ntawm lub chaw tsim khoom ntsej muag muag. Hais txog ntawm lub ntsej muag N 95 , Cov Chaw Tiv Thaiv Kab Mob hauv Tebchaws Asmeskas cov ntaub ntawv tau taw qhia tias nyob rau qhov xwm txheej tshwj xeeb (thaum N 95 qhov ncauj qhov ntswg tsis tuaj yeem ua raws li qhov xav tau), nws muaj peev xwm ua kom 0010010 quot; siv sijhawm 0010010 quot; thiab 0010010 quot; luag siv rov qab siv 0010010 quot; nyob rau hauv nruj specifications. Feem ntau, cov qhov ncauj qhov ntswg zoo tib yam tuaj yeem rov ua dua. Cov chaw tsim khoom lag luam 0010010 # 39; s cov lus qhia tsis qhia qhov ncauj qhov rov siv dua tshiab. Thaum raug yuam lossis tsis muaj lwm qhov npog qhov ncauj, tshwj xeeb yuav tsum them rau qhov rov qab siv: thawj, kev siv txuj ci tua kab mob ntawm science; thib ob, cov neeg ua haujlwm tshwj xeeb nkaus xwb; qhov thib peb, daim npog ntsej muag rov siv tau Nws tuaj yeem siv rau hauv kev ua haujlwm tsis muaj haujlwm, hauv cov chaw pej xeem, khw muag khoom noj khoom haus, khw kev lag luam, nws tsis pom zoo rau cov pej xeem mus rau hauv tsev kho mob.
