问题
问答题 简答题
简述样品手工混合方法中的堆锥混匀法？
答案
参考答案：
把已破碎到规定粒度的试样，用铲铲起堆成圆锥体，再交互地从试样堆两边对角贴底逐渐铲起堆成另一个圆锥体，每次铲起的试样不应过多，并应分2—3次撒落再新锥顶端，使其均匀的落在堆的四周，堆成锥体的过程中，堆顶中心位置不得移动，如此反复三次，使试样粒度分布均匀。
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简述样品手工混合方法中的堆锥混匀法？
参考答案：
把已破碎到规定粒度的试样，用铲铲起堆成圆锥体，再交互地从试样堆两边对角贴底逐渐铲起堆成另一个圆锥体，每次铲起的试样不应过多，并应分2—3次撒落再新锥顶端，使其均匀的落在堆的四周，堆成锥体的过程中，堆顶中心位置不得移动，如此反复三次，使试样粒度分布均匀。
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| 请认真阅读下面短文，然后从短文后各题所给的A、B、C、D四个选项中，选出一个最佳 选项。 As we all know, the environment around us is getting worse and worse. In some places we can’t see fish 1 in the river or trees on the hills. Some people even have no clean water to drink. Recently, a new lifestyle called low carbon life is 37 2 every comer of our country. The meanings of low carbon are 3 energy and no waste. It is such an important project that I can’t wait 4 my ideas on how to promote it. First，we should 5 a no-car day every week in our school. Because cars not only cause serious air pollution but also waste energy. 6 the no-car day, neither students 7 teachers are allowed to drive to school. At the same time，just walk or run. Use our 8 and enjoy the fun. Second, we had better not use plastic bags 9 . No one can stand the “white pollution”， 10 it is wise to use cloth bags which can 11 again and again. 12 ，one thing 13 we should keep in mind is that every big thing comes from the small details. So, as students, we ought to turn 14 the lights the moment we leave, use 15 sides of the paper, and reuse our textbooks and so on. All in all, it weighs greatly for all of us to put the low carbon lifestyle into practice. Just set our mind to these：no-car days, no plastic bags, and no waste. Let’s do it now. | |||
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