28. Recalls its resolution 54/14 of 29 October 1999 regarding the need to take steps to ensure that specifications are not deliberately tailored to predetermine the choice of supplier and that the principle of separation of responsibilities of the requisitioning and approving officers is maintained;
28. 回顾其1999年10月29日第54/14号决议，其中涉及需要采取步骤确保不得有意识地专门根据预定的供应商的情况制定规格并要维持申购人和核签人责任分离的原则；