2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov lus teb luv luv yog no, hais tias LeeAnne Jackson, tus kws pab tswv yim txog kev noj qab haus huv ntawm FDA's Center for Food Safety and Applied Nutrition. "Lub tub yees yuav tsum tau khaws cia ntawm qhov ntsuas kub tsis tu ncua ntawm 40 degrees Fahrenheit lossis qis dua," Jackson sau hauv email.
Kuv puas yuav txuag nyiaj los ntawm kev kaw kuv lub tub yees thiab lub tub yees thaum hmo ntuj?
Koj tau nug yog tias muaj ib txoj hauv kev kaw koj lub freezer thaum hmo ntuj tuaj yeem pab txiav koj cov nqi. … 'Koj yuav tsis txuag lub zog los ntawm kev tig koj lub tub yees rau lub sijhawm luv luv vim nws tsuas yog siv lub zog ntau dua kom txias dua thaum koj tig rov qab.
Puas zoo dua los tua lub tub yees thaum tsis siv?
Feem ntau, txhua yam khoom siv tuaj yeem tua lossis ntsaws tau tab sis lub tub yees tsis tuaj yeem ntsaws tau yooj yim. Tsuas tso koj lub tub yees los yog lub freezer qhib yuav ua rau koj cov nqi hluav taws xob nce ntxiv. Kuj tseem muaj kev pheej hmoo khaws koj cov zaub mov hauv lub tub yees rau lub sijhawm ntev.
Peb puas tuaj yeem hloov lub tub yees kom txuag hluav taws xob?
15 ib chav. Nws muaj lwm yam zoo thiab. Yuav txo qis kev siv hluav taws xob los ntawm lub tub yees mus txog 15 feem pua, yog li txiav cov nqi hluav taws xob. … Yog li hloov tawm lub tub yees thaum lub sij hawm tsis tshua muaj hluav taws xob nce lub neej ntawm lub tub yees li 50 feem pua , kev tshawb fawb tau ua pov thawj.
Puas yog qhov ua tau kaw lub tub yees txhua hmo?
Qhov luv teb tsis yog, hais tias LeeAnne Jackson, tus kws pab tswv yim txog kev noj qab haus huv ntawm FDA's Center for Food Safety and Applied Nutrition. "Lub tub yees yuav tsum tau khaws cia ntawm qhov ntsuas kub tsis tu ncua ntawm 40 degrees Fahrenheit lossis qis dua," Jackson sau hauv email.
Pom zoo:
Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?
Gramophone: Txhua lub suab kaw suab, lossis cov cuab yeej ua si yav dhau los-cov suab kaw, tshwj xeeb tshaj yog tias nws siv lub tiaj tiaj tiaj. Phonograph: Txhua lub suab kaw suab, lossis cov cuab yeej siv rau kev ua si cov suab uas tau kaw dhau los, tshwj xeeb tshaj yog tias nws siv lub tog raj kheej tig.
Puas yog lub tshuab hluav taws xob xav tau lub tshuab hluav taws xob?
Diesels tsis xav tau lawv - pob tseg li qub / tshuab tawm li qub yog tsim los rau qhov chaw nruab nrab ntawm lub turbo thiab lub throttle. Nyob rau hauv ib tug petrol engine, ntawm siab boost, thaum koj snap lub throttle kaw lub turbo tseem tig.
Puas hluav taws xob hluav taws xob puas tsim hluav taws xob?
Coal feem ntau siv roj los tsim hluav taws xobhauv Tebchaws Meskas. Hauv cov chaw tsim hluav taws xob hluav taws xob hluav taws xob, cov hluav taws xob bituminous, subbituminous thee, lossis lignite raug hlawv. Cov cua kub uas tsim los ntawm kev sib xyaw ntawm cov thee yog siv los hloov cov dej mus rau hauv qhov chaw siab zog, uas tsav lub turbine, uas tsim hluav taws xob.
Lub tshuab hluav taws xob hluav taws xob tsim hluav taws xob li cas?
Piav seb lub twj hluav taws xob hluav taws xob tsim hluav taws xob hla lub membrane li cas. Los ntawm pum electrons hla lub membrane, sab uas cov electrons raug tshem tawm muaj qhov zoo dua, thaum sab tau txais cov hluav taws xob ntau muaj qhov tsis zoo.
Puas yog lub tshuab hluav taws xob puas muaj lub tshuab hluav taws xob?
Vim li cas lub tshuab hluav taws xob sab hauv combustion yuav tsum tsis muaj lub tshuab hluav taws xob los ua kom cov roj tsis zoo li roj av? Spark plugs yog siv nyob rau hauv cov roj cav mus ignite cov pa roj sib tov whereas nyob rau hauv diesel engines lub xub ntiag ntawm lub txim plugs yog tsis tsim nyog.
