Kugirango uguhe igishushanyo mbonera cya sisitemu, nyamuneka tanga amakuru hepfo ukurikije ibisabwa byihariye: 1.Ni bangahe bakeneye gukoresha amazi ashyushye ava muri sisitemu?2.Ni ubuhe bwoko bw'ubwubatsi, nka hoteri, dortoir y'ishuri ...
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