Knowledge
China Coal Group Held Legal Knowledge Training
In order to improve the legal quality and legal affairs ability of the Group's management staffs and better safeguard the interests of the Group. On the afternoon of August 5, Shandong China Coal Grou
Jining City Industrial And Commercial Vocational Training School Held Senior Management Financial Knowledge Training
On the afternoon of July 8, 7th training and financial knowledge training course for senior management cadre of Shandong China Coal Group, which organized by Jining City Industrial And Commercial Voca
The Important Knowledge of The SCBA Usage
A self-contained breathing apparatus, or SCBA, sometimes referred to as a compressed air breathing apparatus (CABA), or simply breathing apparatus (BA), is a device worn by rescue workers, firefighter
Basic Knowledge of Railway Steel Rails
General rail, refers to the track laying of railway lines, special line, bend and tunnel. Among them, the standard rail length contains 12.50 meters and 25.00 meters two kinds, the laying curve track,