Mfundo zazikuluzikulu zisanu zakuyika ma valve wamba kuyika ma valve a mpweya wotentha, kugwiritsa ntchito ndi kukonza
Mfundo zazikuluzikulu zisanu zoyika ma valve okhazikika, kuyika, kugwiritsa ntchito ndi kukonza ma valve ambiri akulowera. Mwachitsanzo, valavu yapadziko lonse lapansi, valavu yopumira, valavu yochepetsera kuthamanga, valavu yoyang'ana, ndi zina zambiri, ngati itayikidwa kumbuyo, idzakhudza kugwiritsa ntchito eff ...
Onani zambiri