新增抱杆不从商务平台采购，使用什么施工模块（） 普通塔桅安装模块。 简易塔桅安装模块。 钢塔桅安装模块。 快装抱杆安装模块。
物资采购项目的招标是怎样规定的？
为什么吃食性鱼类需要投饲配合饲料，而滤食性鱼类不需要？
烟用物资的采购有哪几种形式？供应商是如何产生的？
Fuel oil tanks must be fitted with （） that can be closed rapidly and remotely in the event of an emergency such as a fire. stop valves。 non-return valves。 quick closing valves。 relief valve。
The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.
