Kugwiritsa ntchito mokhazikika komanso kosavuta kugwiritsidwa ntchito kwa FF kumapereka ogwiritsa ntchito ndi maziko ophunzitsira olimba. Mapepala osinthika m'chiuno ndi mapepala okhala ndi matupi okhazikika amapatsa ogwiritsa ntchito molimbikitsidwa ndikulola kuti ziwonjezeke.
Zovuta zopitilira muyeso wa m'chiuno zowonjezera zowonjezera ndi zowonjezera zowonjezera ndi ergonic.
Odzigudubuza owonjezera owonjezera komanso akuluakulu osakhazikika a skid amaonetsetsa zokhazikika, zotetezeka kwambiri polowera.
Ma hansically okhazikika amalola kulowa kosavuta ndikutuluka kwa aparatos osasunga ntchito yonse ya ogwiritsa ntchito.
Mapakiti Amiyendo ndi muyezo, amapereka bata lazogulitsa ndikuthandizira kupewa malonda.