问题
问答题 简答题
什么是煤(岩)与瓦斯突出?
答案
参考答案:
煤(岩)与瓦斯突出:在地应力和瓦斯的共同作用下,破碎的煤、岩和瓦斯由煤体岩体内突然向采掘空间抛出的异常的动力现象。
什么是煤(岩)与瓦斯突出?
参考答案:
煤(岩)与瓦斯突出:在地应力和瓦斯的共同作用下,破碎的煤、岩和瓦斯由煤体岩体内突然向采掘空间抛出的异常的动力现象。
短文填空 (共10分,每空1分)
Early in the morning, Mr. Black was carrying a big basket of cabbages to the market. She hoped 小题1:___them to the people from town. The mountain road was narrow(狭窄的)and the old woman 小题2:___carefully. Suddenly she 小题3:___a loud bell. It passed her and very fast down the hill. The old woman had to 小题4:__to one side of the road so quickly that the basket of cabbages nearly 小题5:___into the valley. She saw a young boy 小题6:.___on the bicycle without even 小题7:___round to see if the old woman was all right. The old woman shouted, 小题8:___back.” “What 小题9:___it?” the boy asked impolitely, pushing his bike towards the old woman. “What did I drop?” “Little boy, you 小题10:___your manner.” The old woman answered. |