(1) Ukubukeka Singakwazi ukwahlulela izinkinga ezithile zekhwalithi ngokuzihlola ngokubona, njengokuthi akhona yini amabala kawoyela, amabala ombala, izimpawu zokuguga, ama-snags, amaphutha emigqa, ukonakala kwemigqa, imithungo eyeqiwe, njll.(2) Unqenqema olungaguquki Ithawula ngalinye kufanele libe nomphetho, amanye anqunywe nge-ultrasonic...
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