Cov txheej txheem:

Koj puas rov qab tag nrho cov tshuaj tsis siv rau hauv lawv cov ntim qub?
Koj puas rov qab tag nrho cov tshuaj tsis siv rau hauv lawv cov ntim qub?

Video: Koj puas rov qab tag nrho cov tshuaj tsis siv rau hauv lawv cov ntim qub?

Video: Koj puas rov qab tag nrho cov tshuaj tsis siv rau hauv lawv cov ntim qub?
Video: tag rau koj lawm - nuj xeem - nkauj tawm tshiab 2022 2024, Kaum ib hlis
Anonim

Ua tsis tso tshuaj rov qab rau hauv reagent fwj; rov qab ib qho tsis siv chemical rau ib lub thawv txaus ntshai kab mob. Cov khoom siv ntxiv yuav tsum muab tso rau hauv tus tsim nyog cov khoom pov tseg thawv . Thaum twg ua tau, muab cov khoom siv ntau dhau nrog ib nyob ze, tab sis ua tsis yog rov qab los nws rau thawj lub thawv.

Yog li, koj yuav tsum ua li cas rau txhua yam tshuaj tsis siv tom qab txhua qhov chaw kuaj?

Cov ntsiab lus hauv pawg no (25)

  1. Cov iav kub zoo ib yam li iav txias.
  2. Tag nrho cov tshuaj nyob rau hauv lub lab yuav tsum tau txiav txim siab.
  3. Rov qab tag nrho cov tshuaj tsis tau siv rau lawv qhov qub.
  4. Cov chaw ua haujlwm yuav tsum tau ua kom huv thiab huv.
  5. Cov kav dej yog siv los ntsuas thiab faib me me.
  6. Kev ua haujlwm hauv chav kuaj tuaj yeem pib tam sim ntawd.

Qhov thib ob, puas yog tag nrho cov tshuaj nyob hauv chav kuaj pom tias muaj kev phom sij? Tag nrho cov tshuaj nyob rau hauv lub lab yog yuav suav tias yog txaus ntshai . 24. Rov qab los tag nrho tsis siv tshuaj mus rau lawv cov ntim khoom qub. Laboratory kev ua haujlwm tuaj yeem pib tam sim ntawd thaum nkag mus rau hauv chav kuaj txawm tus kws qhia ntawv tseem tsis tau muaj.

Ib yam li ntawd, vim li cas cov kev sim uas tsis tau tso cai raug txwv?

Tsis txhob ua kev sim tsis raug cai . Tsis tsuas yog qhov no feem ntau txwv tsis pub , tab sis nws ua rau kom muaj kev sib tsoo ntawm cov tshuaj incompatible. Ib tug tub ntxhais kawm ua qhov no hauv chav kuaj sim yuav raug ntiab tawm ntawm chav kuaj, raug foob nrog kev ua txhaum cai, thiab / lossis tau txais qib ua tsis tiav hauv chav kawm.

Puas yog txhua qhov kev sim tsis raug tso cai raug txwv?

Ib qho txwv tsis pub cov kev sim uas tsis tau tso cai . Cov tub ntxhais kawm yog tsis pub nyob rau hauv lub chaw kuaj mob sab nraum lub sij hawm teem tseg tshwj tsis yog muaj ib tug kws qhia. tsom iav kev nyab xeeb yuav tsum tau hnav ntawm tag nrho lub sij hawm thaum nyob rau hauv lub laboratory. Lawv muaj rau tag nrho tshuaj siv nyob rau hauv lub chav kuaj.

Pom zoo: