Cau 245: Chon phuong trinh hoa hoc viet dung (chuong 7/bai 34/chung/muc 2) A2Cr^(3+)+Zn→2Cr^(2+)+Zn^(2+) B. 2Cr+6H^+→2Cr^(3+)+3H_2 C. Ag+Cu^(2+)→Cu+Ag^+ D. 2CrO_2^(2-)+3Br_2+8OH^-→2CrO_4^(2-)+6Br^-+4H_2O Dáp án: A ...
Nghien cuu mien dich thu duoc tren benh Newcastle de xuat chuong trinh phong benh bang vacxin hop ly cho dan ga nuoi theo phuong thuc cong nghiep Researches on the immunity of newcastle disease, recommendation of a sound vaccination schedule to control it ...