Tom t~t. T r an g h e th o n g qu a n li U ti ngu ye n , CC 1 so ha t a n g an ninh , a n toan l a m o t tron g nhirn g t h a nh ph a n quan tron g nhat . (; day, chun g t6i tap trung vao vi e c ph a n tich v a thi e t ke
mot gi a o t hirc xac thtrc dir a tren
giao thirc xa c thirc Ker[r]