Thaum cov kws tshawb fawb pib nkag mus rau hauv kev sim, lawv yuav tsum xyuam xim rau tag nrho cov ntsiab lus ntawm lawv tus kheej, vim hais tias cov txheej txheem ntawm kev tshawb fawb tshawb nrhiav yog kom tau txais tsab ntawv ceeb toom xaus, thiab txhua yam me me yuav muaj feem xyuam rau cov ntsiab lus hais yog tias lawv tsis them sai sai. Cia wb mus saib qhov netizen qhov xaus nrog Xiaobian. Cov lus qhia dab tsi yuav tsum tau ua tib zoo xyuas hauv cov kev kuaj pom tias nws muaj kev paub thiab xav muab rau txhua tus neeg.
1. Nkag mus rau hauv lub chaw kuaj ntshav, tsis txhob muaj hmoo, yog tias koj hawv tau qhov kua qaub, nws yog ib qho teeb meem me me rau hauv koj cov khaub ncaws uas koj nyiam, thiab nws yuav tsis yooj yim mus hlawv daim tawv nqaij. Tsis txhob txhawj xeeb, koj yuav tsum tau looj hnab looj tes los ua cov kev sim uas tsim kev puas tsuaj rau koj lub cev thiab ua tus cev rau koj lub cev.
2. Ntxuav tes ua ntej thiab tom qab kev sim. Yog tias koj mus so thiab haus hauv nruab nrab ntawm txoj kev sim, ntxuav koj ob txhais tes. Tsis txhob xav tias cov tshuaj sim no tsis yog tshuaj lom. Lub neej tseem ceeb heev. Ceev faj. Tsis tas li ntawd, yog tias ob txhais tes qias neeg, koj tuaj yeem paug cov kev sim. Seev thiab cov tshuaj reagents, kuaj, ua rau sim kev sim. Thaum koj ua haujlwm, tsis txhob txhuam koj txhais tes ntawm lub tsho dawb.
3. Txhua lub sijhawm ua haujlwm nyob rau hauv lub fume hood thaum nws tuaj yeem ua rau cov khoom tsis haum los yog tshuaj lom.
4. Nco ntsoov pov tseg cov dej khib nyiab, txhuam nws, thiab muab ntxuav kom huv. Cov tshuaj tua kab thiab tshuaj lom yuav tsum tau cim nrog cov cim kev pom zoo. Cov dej khaw uas tau muab pov tseg yog pov tseg tsis tau ntxuav. Yog tias siv cov kua qaub ntawd siv, qee cov neeg yuav tuaj tos lawv. Nws tseem yog ib qho txaus ntshai.
Case:
1 Ib chav siv ntawm cov neeg ua hauj lwm siv cov dej khib nyiab uas muaj cov tshuaj toluene ua kua dej chromic acid (ob xim zoo sib xws), thiab lawv sib xyaw ua ke, thiab tam sim ntawd pob tawg lawm, thiab tom qab ntawd nws lub qhov muag tawm.
2 Nyob rau hauv txoj kev kho cov khib nyiab kua ib zaug, lub raj mis ntawm cov kua unlabeled tau muab coj los tso rau hauv lub thoob khib nyiab cov kua qaub thiab tawg. Tom qab ntawd, kuv kawm hais tias nws tau muab cov phosphorus oxychloride nchuav, uas yuav ntuav thaum raug dej, thiab cov cua sov yuav ua kom nrov tau.
5. Tom qab kaw lub qhov rais qhib qhov rooj tom qab ua hauj lwm lawm, huab cua tau hloov thaum lub caij ntuj sov, thiab txoj kev kuaj muaj ntau cov chemicals, qee cov tseem muaj cov kua qaub, alkali, tshuaj. Them rau dej ua ntej tawm hauv kev sim lossis ua ntej nkag mus rau hauv kev sim. Cov hluav taws xob puas ruaj ntseg?
6. Kuv tsis tuaj yeem nqa cov kav dej thiab ncuav tawm hauv dej. Kuv tsis xav tias tus cwj pwm zoo yog qhov zoo. Yog hais tias tus kav dej tsis dej tab sis lwm cov acids lossis alkalis, nws zoo npaum li cas mus rau lwm tus neeg lub cev.
7. Thaum muab cov roj hmab khi rau hauv lub khob thiab lub raj xa dej, siv ceev faj txhob siv lub zog. Tsis txhob siv qhov no los ua rau cov ntshav ntws ntev mus.
8. Yuav tsum hnav cov khaub ncaws, thiab nws yog qhov zoo tshaj rau kev tuav lub ris! Nws yog ib qho yooj yim mus rau hauv cov teeb meem nrog ob lub tes tsho loj.
Qhov saum toj no yog qhov kev tshawb fawb ntawm cov neeg tshawb xyuas. Koj tuaj yeem saib cov kev tshawb fawb txog kev tshawb fawb los sis cov kev tshawb fawb tom ntej.