Esona sizathu siphambili sokuba iingcingo ze-RV aziqhelekanga ukusetyenziswa kumhlobiso wasekhaya zezi zilandelayo:
. Nangona iingcingo ezithambileyo zineempawu ezithile
Iingcingo zinezibonelelo ngamanye amaxesha, kodwa kuhonjiswa lwasekhaya, kufuneka babe namandla athile oomatshini kunye nokuqina ukuba bakwazi ukudonsa imihla ngemihla. Iintambo ze-rv zithambile kakhulu kwaye zinokuthambeka kumonakalo ngexesha lokusetyenziswa.
. I-RV i-RV ithambile
Isenokungazinzi njenge-BVR okanye i-BV i-BV xa ilungisiwe kwaye inyanzelekile ukuba ikhulule kwiindawo eziqingqiweyo.
