Calcium carbide yog cov khoom tawg. Txhawm rau ua haujlwm nrog nws nyab xeeb, koj yuav tsum ua raws cov cai no:
1. Koj yuav tsum tsim ib qho chaw khaws cia thiab chaw ua haujlwm.
2. Koj yuav tsum tiv thaiv kev nkag mus rau qhov hluav taws kub.
3. Koj yuav tsum hnav khaub ncaws tiv thaiv thiab ua pa ua pa vim yog cov hmoov av tuaj yeem ua rau tawv nqaij thiab ua pa thiab ua pa.
4. Koj yuav tsum tso acetylene cov tshuab hluav taws xob hauv cov chaw sib cais.
5. Koj yuav tsum muab pov tseg tsis zoo rau cov chaw uas muaj cov chaw nyob tom kawg ntawm kev ua haujlwm vuam.
6. Koj yuav tsum tiv thaiv cov thooj voos kheej thiab ntim ntawm sib tsoo thaum thauj khoom thiab chaw khaws khoom, raws li qhov no ua rau muaj kev phom sij tseem ceeb.
Calcium carbide yog siv los ua ntau cov organic ntau thiab inorganic sib xyaw. Cov tebchaw no tau siv nyob rau ntau thaj chaw ntawm lub neej. Ntau ntawm cov tebchaw no tsis tau pom dua ua ntej thiab muaj qhov tshwj xeeb. Tab sis muaj ob tog rau cov tshuaj no: nws tuaj yeem muaj txiaj ntsig, tab sis nws kuj yog cov txaus ntshai tseem ceeb rau tib neeg thiab ib puag ncig. Nws tuaj yeem ua rau tawg thiab hluav taws kub, yog li nws yog qhov txaus ntshai. Peb yuav tsum ceev faj thaum peb siv nws.
