thu cap nguon bang bo nguon coi va xem de o bao nhieu von thi goi ko tat nguon.neu cao qoa thu thay ( pa ) cong suat moi ko len lay tu may khac qoa ma mua con moi di .

hay thoi nhung chua fai la tat ca .kiem tra lai kon trung tan chua ban thay thu no chua . neu roi thi cam may do tung kon C co dien ap tu khoi trung tan len nha ban chac chanla co kon chap roi ma ko het nua la do chap Bo ban oi . nc do thi dung tham tien vao tui nua nha .