cac cau ki$n be tong, ket cau ihep:- Nh$n thau cac cong trinh xay dL!ng dan dl,Jng, cong nghi$p, buu di$n, cac cong trinh thuy Iqi, giao thong, dLlang b¢ cac cap,san bay, ben cang, cau cong, cac cong trinh ky thu$t ha tang, do thi
va khu cong nghi$p, cac cong trinh dLlang day, frarn bienthe 1[r]