Arụmọrụ na njirimara: 1 2. Nwere ike ịchọpụta nrụgide nke ọkpọkọ site na nrụgide nrụgide ma rụpụta ya na akara eletriki. 3 na ngbanwe ọkwa maka mmepụta ihe na-egbochi ihe nrịba ama .4. Enwere ike ịgbagharị mmanụ iji chekwaa mmanụ; 5. Ahịrị mmanụ mmanụ nwere ihe nlọghachi mmanụ na-eme ka igwe dị ọcha na-eme ka igwe mgbasa ozi dị mma, na-enye ìhè nke igwe, na-enye igwe eji eme ihe na igwe ndị ọzọ na nnukwu igwe. Dabere na mkpa dị iche iche nke ndị ahịa, anyị nwere ike chepụta ma mepụta usoro dị iche iche lubriction.
