针对现行财会考试存在的问题,利用SQL Server 2000和Delphi工具开发了基于网络环境的财会考试管理系统。该系统具有报名管理、考场管理、考试管理、数据导出、数据输入/输出、数据字典维护、帮助等功能。它具有保密性和安全性等特点,能...针对现行财会考试存在的问题,利用SQL Server 2000和Delphi工具开发了基于网络环境的财会考试管理系统。该系统具有报名管理、考场管理、考试管理、数据导出、数据输入/输出、数据字典维护、帮助等功能。它具有保密性和安全性等特点,能更好地节约成本,提高工作效率。展开更多
Mine gas extraction parameters are of great significance to the optimization of mine gas extraction, better management on site, improvement of mine gas extraction. Based on large amount of test data obtained from extr...Mine gas extraction parameters are of great significance to the optimization of mine gas extraction, better management on site, improvement of mine gas extraction. Based on large amount of test data obtained from extraction site, applied fluid mechanics and gob-area air flow theory assisted by mathematical analysis, this article presents an analysis of the major factor affecting mine gas extraction as well as puts forward the optimal mine gas extraction parameters suitable for use under the coal seam geological conditions in Luling coal mine.展开更多
文摘Mine gas extraction parameters are of great significance to the optimization of mine gas extraction, better management on site, improvement of mine gas extraction. Based on large amount of test data obtained from extraction site, applied fluid mechanics and gob-area air flow theory assisted by mathematical analysis, this article presents an analysis of the major factor affecting mine gas extraction as well as puts forward the optimal mine gas extraction parameters suitable for use under the coal seam geological conditions in Luling coal mine.
