Special valve yemafuta uye gasi
Kuti udzore kuyerera kwemafuta uye gasi, mavharuvhu akakosha emafuta uye gasi anofanirwa kuve neanotevera ekutanga zvivakwa: chisimbiso, kumanikidza simba, kuchengetedza, kugadzirisa, kuyerera kwemvura uye kushandura kushanduka. Zvekumanikidza kwakanyanya, zvinobvira uye zvinoputika mafuta uye gasi svikiro, th...
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