If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon().
A. The center of the storm will by-pass you
B. The storm will strike you on the starboard side
C. You are in the direct path of the storm and should take immediate steps to batten down loose gear
D. The storm is starting to break u
查看答案
在排放瓦斯过程中,排出的瓦斯与全风压风流混合处的瓦斯和二氧化碳浓度都不得超过1.5%,且()回风系统内必须停电撤人。
A. 采区
B. 工作面
C. 矿井
掌握一个建设项目进行技术经济评价的主要技术经济指标的内容。