问题:严禁跨越运转设备,不得接触设备运转部位,不准在运转的设备上传递物...
Thursday, September 15, 2022
Wednesday, September 14, 2022
问题:矿井标准分总分为()分。A、100B、150C、200D、300...
Friday, October 25, 2024
Wednesday, September 14, 2022
Thursday, September 15, 2022
Tuesday, October 3, 2023
Sunday, February 26, 2023
问题:如人员被困地点有压风管,应打开压风管给被困人员输送(),并稀释被堵空间的瓦斯浓度,但要注意保暖。A、氧气B、新鲜风流C、排放瓦斯...
Tuesday, October 1, 2024
Wednesday, September 14, 2022
Thursday, September 15, 2022
问题:日常检查中对于轴承静态油润滑系统,检查(),如需要,再加些油。...
Thursday, September 15, 2022
Wednesday, September 14, 2022
问题:选择性破碎机又称()A、颚式破碎机B、齿辊式破碎机C、滚筒式破碎机D、冲击式破碎机...
Monday, June 5, 2023
Wednesday, September 14, 2022
Wednesday, September 14, 2022
问题:为防止粉尘进入,在仟辊内部装有滚动轴承和密封装置。...
Monday, September 9, 2024
Monday, December 19, 2022
Sunday, January 21, 2024
问题:根据矿物磁性差异进行()的工序过程叫磁选。A、分选B、浮选C、选别...
Tuesday, December 12, 2023
Thursday, September 15, 2022