Ukuhlaziywa kocwaningo lwemakethe lwabakhiqizi be-valve yesango: amathemba okuthuthukiswa kwemboni nokuncintisana
Ngokuthuthuka okuqhubekayo kwemishini ehlukahlukene yenqubo nobuchwepheshe, i-valve yesango, njengemishini ebalulekile yokulawula uketshezi, isetshenziswe kabanzi emikhakheni yezimboni neyomphakathi. Ngakho-ke, ukuhlaziywa kocwaningo lwemakethe lwabakhiqizi be-valve yesango kuyinto enhle kakhulu ...
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