Seiichi meets the extremely eccentric students of F-class and gets stuck playing the straightman before the class' old teacher, Beatrice, suggests mock battles so Seiichi can assess their abilities.
Practical abilities? 
You mean real combat training?
Die Kraft? Also ihre Kampffertigkeit?
¿Te refieres
a sus habilidades en combate?
¿Te refieres
a sus habilidades de combate?
Par là, vous voulez dire
leurs talents au combat ?
Le capacità pratiche?
Habilidades práticas? Você quer dizer
sobre suas técnicas de combate?
Их способности? 
Вы про тренировку в реальном бою?