问题
问答题 简答题
简述预可采储量。
答案
参考答案：
探明的经济基础储量的可采部分。是指在已达到勘探阶段加密工程的地段，在三维空间上详细圈定了矿体，肯定了矿体连续性，详细查明了矿床地质特征、矿石质量和开采技术条件，并有相应的矿石加工选冶试验成果，但只进行了预可行性研究，表明当时开采是经济的。计算的可采储量可信度高，可行性评价结果的可信度一般。
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简述预可采储量。
参考答案：
探明的经济基础储量的可采部分。是指在已达到勘探阶段加密工程的地段，在三维空间上详细圈定了矿体，肯定了矿体连续性，详细查明了矿床地质特征、矿石质量和开采技术条件，并有相应的矿石加工选冶试验成果，但只进行了预可行性研究，表明当时开采是经济的。计算的可采储量可信度高，可行性评价结果的可信度一般。
| 阅读理解。根据短文内容判断下列句子的正(T)和误(F)。 | |
children in. Soon the plane begins up. Joan looks out of the window. " Oh, we're just like birds in the sky! " she says. She looks at the houses, but they are like toy houses. Mike looks out of the windows, too. He sees some buses. They look like toy buses. The people on the ground (地面) look very, very small, too. Then the plane comes down and down, and stops on the ground. Mike and Joan are very happy. ( ) 1. Mr. Baker takes Mike and Joan to a plane, because they are going to school. ( ) 2. The children see some birds in the sky. ( ) 3. Seen from the sky, the houses look like toy houses. ( ) 4. The children can see men and women on the ground. ( ) 5. They have a good time in the plane. |