he main production links of open-pit mining production technology include rock preparation, mining and loading, transportation and .
举一反三
- The main production links of the open-pit production process include ( ). A: Ore and rock preparation B: Mining and loading C: Transportation D: Breaking
- The front loading machine can be used as the main mining and loading equipment in large open pit mines.
- What are the benefits of tilting the layered steps? ( ) A: Easy to separate mining of ore and rock and improve ore quality B: Convenient for transportation equipment operation C: Convenient for mining equipment operation D: Ease of layering
- The stage natural caving method is the most economical of all mining methods. If the conditions are suitable, it can also achieve high production capacity.
- Texas and Louisiana ______ the nation in the production of sulfur and are also important salt mining states. A: lead B: take C: contribute D: offer