1. Iipateni ezahlukeneyo ziyakwazi ukuxeliswa ngokungaqhelekanga, kunye nombala oqaqambileyo, osetyenziswa njenge-veneer kwiipaneli ezahlukeneyo zomthi kunye neenkuni, ezinobunzima obuphezulu, ukunyanzeliswa kokugqoka kunye nokumelana nokushisa okulungileyo.2. Ukunganyangeki kweekhemikhali kuqhelekileyo, kwaye kunokuxhathisa ukukrazula kwee-asidi eziqhelekileyo, i-alkalis, i-oyile, i-alcohols a...
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