I-valve ekhethekile yamafutha negesi
Ukuze kulawulwe ukugeleza kwamafutha negesi, ama-valve akhethekile kawoyela negesi kufanele abe nezinto ezilandelayo eziyisisekelo: ukubekwa uphawu, amandla okucindezela, ukuphepha, ukulungiswa, ukugeleza kwamanzi kanye nokuguquguquka kokushintsha. Ngomfutho ophezulu, uwoyela ovuthayo neziqhumane negesi medium, ...
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