I-valve yebhola okwamanje iyi-valve esetshenziswa kakhulu embonini.Isetshenziselwa ikakhulukazi ukujikeleza, ukusika, nokulungiswa kokugeleza.Ngokohlobo lokujikeleza, ama-valve ebhola angahlukaniswa abe ama-valve ebhola anezindlela ezimbili, ama-valve anezindlela ezintathu zebhola, nama-valve anezindlela ezine zebhola, adlala indima ...
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