(a) The contracting authority should first call upon the pre-selected bidders to submit proposals relating to output specifications and other characteristics of the project as well as to the proposed contractual terms;
(a) 订约当局应首先要求预选选定的 投标人提交与产出技术规格和项目的其他 特点以及拟议中的合同条款有关的投标书；