Kusho ukuthini ukuthi into ethile ingenziwa umquba?
Into eyenza umquba "iyobola" ngesikhathi esifushane, ibuyele ezintweni zemvelo ezifana nomquba. Lokhu kuhlukile ezintweni ezifana nepulasitiki noma i-aluminium okudinga izinkulungwane noma ngisho nezigidi zeminyaka ukuba ziwohloke futhi zishintshe zibe okuthile okutholakala ngokwemvelo. Inzuzo yezinto zokwenziwa komquba ukuthi azikhiqizi udoti ukuze zithathe indawo ezindaweni zokulahla udoti, futhi zisebenzisa okokufaka okuningi okutholwe ngokwemvelo ezinqubweni zokukhiqiza (ngokungafani namafutha emvelo).