A lo ọpa ẹhin nigbagbogbo fun gbigbe gbigbe lailewu ti o farapa ati awọn alaisan alaiduro.
O le ṣafo loju omi
ṣiṣu imọ-ẹrọ agbara, ọkọ ọpa ẹhin yii n duro de egboogi-ti ogbo, ikojọpọ iwuwo ati rọrun
fun ifipamọ. igbimọ yii n duro , egboogi-ti ogbo loading ikojọpọ iwuwo ati rọrun fun ibi ipamọ.
Eto naa gba laaye.