Loluphi ulwazi oludingayo phambi kokuba undinike ixabiso kunye nesindululo?

Ekubeni siqulunqa izixhobo ngokwemfuno yomthengi wethu, sifuna umlinganiselo osisiseko weemveliso ozifunayo, kuquka yonke i-diameter yombhobho (okanye ubude betyhubhu), uluhlu lobuninzi, ukusetyenziswa, ibakala lentsimbi ekrwada, ubunzima bekhoyili, kunye neqondo lokuzenzekelayo.