The most easily oxidized coal is ().
A: lignite coal
B: bituminous coal
C: lean coal
D: anthracite coal
A: lignite coal
B: bituminous coal
C: lean coal
D: anthracite coal
举一反三
- The dry ash free volatile content of a coal is 7%, which is most likely to belong to (). A: Bituminous coal B: Anthracite C: Lignite D: Lean coal
- The dry ash free volatile content of a coal is 47%, which is most likely to belong to (). A: Lignite B: Lean coal C: Anthracite D: Bituminous coal
- ( ) is not a real coal, but only a precursor. A: Anthracite B: Bituminous coal C: Lignite D: Peat
- Which of the following is not a common way for coal caving? ( ) A: Top caving coal in group sequence B: Top caving coal in single cycle sequence C: Top caving coal in multiple cycles in sequence D: Top caving coal in intervals of single cycle
- Rich in coal, abundant in oil and gas, while coal is the most important basic energy and raw material in China.