Which of the following is not a major problem to be solved in mine field development method?( )
A: Mining methods
B: Shaft (adit) form
C: Number of mining levels
D: Layout of main haulage roadway
A: Mining methods
B: Shaft (adit) form
C: Number of mining levels
D: Layout of main haulage roadway
举一反三
- Which of the following are common forms of comprehensive development?( ) A: Development of main inclined shaft-auxiliary vertical shaft B: Development of main shaft-auxiliary inclined shaft C: Main shaft-auxiliary adit D: Multi-shaft areas development
- Which of the following methods is not the research based on market method? A: Questionnaire B: Data mining C: User interview D: User observation
- Under the setting of mining level in China, single level or ______ development is widely used in various mine development.
- Which of the following is not a basic procedure for text mining? A: Text preprocessing B: Text classification C: Text transformation D: Text mining
- What are the technical factors to be considered in mining methods? ( ) A: Equipment level B: Technology method C: Strata control D: Cost per ton of coal