In the southwestern part of the United States _________ built in the last century. A: they are many abandoned mining towns B: where there are many abandoned mining towns C: are many abandoned mining towns D: many abandoned mining towns are

In the southwestern part of the United States ______ built in the last century. A: there are many abandoned mining towns B: were many abandoned mining towns C: where there are many abandoned mining towns D: where are many abandoned mining towns

Data Mining：

he main production links of open-pit mining production technology include rock preparation, mining and loading, transportation and .

In mining industry, “black diamonds” are （ ）.

The level with is called the mining level.

Which one of the following jobs belong to pink-collar? A: Mining. B: Computer programmer. C: Waitress. D: Environmental consultant.

Which of the following is not a basic procedure for text mining? A: Text preprocessing B: Text classification C: Text transformation D: Text mining

Which of the following are absolutely essential to effective mining. A: spatial concepts B: mapping C: network analysis D: time/space operationstechnology

over of all dust generated during mining