问题:我国冶金地下矿山当前主要采用的开拓方法为()。A、竖井开拓法B、斜井开拓法C、平峒开拓法D、主巷开拓法
Monday, September 12, 2022
Friday, September 16, 2022
问题:建设投资在项目建成后形成了()。A、递延资产B、金融资产C、固定资产D、无形资产
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Friday, June 9, 2023
Sunday, September 11, 2022
Wednesday, September 14, 2022
Friday, June 9, 2023
Friday, September 16, 2022
问题:在三维块状模型中,将矿床分为单元块后,需要应用某种方法对每一小块的平均品位进行估计。常用的方法有三,即()、()和()。
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Sunday, September 11, 2022
Wednesday, September 14, 2022
问题:采面出口20m内巷道净高不小于()m。A、2.0B、2.2C、1.8D、1.6
Friday, September 16, 2022
问题:汛前、汛期、汛后,尾矿库企业的自查是指()。A、“五查五看”B、“六查六看”C、“一查五一”
Wednesday, September 14, 2022
Friday, January 19, 2024
Sunday, August 13, 2023