Amancajisi nezicekiso zihluke izixhobo ezidingezileyo kwiqhude lwezandla lokusebenza, zisebenzisa ngokubanzi ukugcina amabhili okanye amaningi iindlela. Ngokushesha ukukhetha amancajisi nezicekiso, uya kudinga ukubonelela amanani nokulandelana nazo ukusure kamva nothe kuqinisekise uphawu kunye nomsebenzi wabo.
Imininingwane yamancajisi iyavamisela ngeminyaka eyahlukene ezi-10 njenge-3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, kunye ne-12.9. Ngaphandle kwalokho, amancajisi amahluke a-8.8 kunye namagama angaphantsi ayishayamthetho amancajisi amahluke, abaningi babenziwe ngumtolo wesintshanti wekhonjeni okanye umtolo wesikhombisa esikhombiseni, bavela ngokuthi babekhona ngokuhlola. Ngenxa yalokho, imanani yesiphi sasemancajisi siyaziwa njengesimanje esingaphezulu.
Ngokugcinwe kwezintaba, zicala ezinomsindo zihamba ngamandla nokulandelana. Ngokuthiyo, amacala amahluhlu angavunyelwa ngosishiyagalolunye usuku ngokwesikhombisi somncane, okwesiqadi, kunye nomkhulu. Kwakhiwa ngalokho, amacala amaphandle amahluhlu angavunyelwa ngokusasa esine: A, B, kunye noC. Ngonyaka ezintathu, izindlela ezimbili, iType I kunye noType II, zakhethelwa ngokubanzi bese ekufanele. Amacala amasikhwenti amahlulekile ngokwesikhombisi somncane, omqadi, kunye nomaqhawekazi. Amacala emasinye inani lamakhulu olungelwe luhluhlisekile ngokwesikhombisi somncane, iType I, iType II, kunye nemacala emanani elincane. Amacala engamandla ezi-8 ezikhishwe ngemibhalo eyisibhenyi: iType I kunye noType II.
Amanani alendaweni lemacala amahlulekile ngezindawo ezithile zezindawo, njengazo: GB41 amacala amasikhwenti, GB6170 amacala amasikhwenti, GB6174 amacala amasikhwenti amanani elincane, futhi noma. Indawo yamacala ingene ngokukhulu ngokubonisa nokuhlola ukuba amacala kunye nezintaba zifanele ngokuphelele kanye nokusuka kwabo ngokumthethweni nokuzenzela kwiqhawekazi.
Kuyonke amanqaku nokunye kwenzelela, kufuneka bengahlangene ngenqubo yokugcina. Ngokubanzi, amanqaku nokunye kufuneka baye ngamagreyedi angaphakathi ukusure yezinto zabo ukuthi zikhululekile ukuhlanganisela. Kodwa, kunesikhashana esingekho, ngoba amanqaku khona kuzoqinisekiswa kodwa kunye hlokwa kuhloniphe, iziphumo nokuhlola kufanele zibuyeleyo, ngakho ke magreyedi wekunye kungapheleleyo kweamanqaku.
Ngokushesha, amanqaku nokunye nezi ziyizimpawu ezinhle kuhlanganisiweyo kwiNgcwadi Yomsebenzi Womekaniki. Ukukhetha kufuneka kuhloniphe izigreyidi, amathetho nokuphi wabo umkhakha ukusukelela ukuthi zisafani nokuthi zikhululekile. Kwiminyaka yesikhatsi, kuhloniphe ukufundziswa nokugcwalisa njengamanje ukusukelela ukuthi imibhalo nemibala yakho yayihlobene.
Izindaba Ezishisayo 
