问题
问答题 简答题
何为局部瓦斯积聚?
答案
参考答案:
采掘工作面及其它巷道中,体积大于0.5m3的空间内积聚的瓦斯浓度达到2%时叫局部瓦斯积聚。
何为局部瓦斯积聚?
参考答案:
采掘工作面及其它巷道中,体积大于0.5m3的空间内积聚的瓦斯浓度达到2%时叫局部瓦斯积聚。
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Dear Victoria, How's it going? Things are fine here. Next Saturday, John and Sandy will come to my house for dinner. But I don't know how to cook. What should I do. John likes apples and Sandy likes bananas and watermelons. They both like something sweet. I want to make something delicious they like. Can you tell me what kind of food I can make? Please try to help me! Please think over and write to me soon! Best wishes! Yours, Linda | ||||||||||
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