Due to the hazards involved with Halon extinguishers on a ship,the size II extinguisher may only be used().
()involves comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance. These other projects can be within the performing organization or outside of it, and can be within the same or in another application area.
免费的网站请分享给朋友吧