khen cua Tong Giam doc BHXH Viet Nam. - Mot s6 giai khuyln khich, moi giai tri gia 4.000.000 d6ng (Bon trieu dong). - Mot so giai thuang khac, giai thuang ciia nha tai trg (neu c6). 2. Giai tap the: Giai tap the dugc tang cho cac tap the c6 so lugng nguai dy thi...