Inthiscountry,coal electricity.
举一反三
- Coal is most used for the electricity production in()and().
- Electricity generation is the process of converting some form of energy ___ electricity.
- In the following options, ( ) is considered as the secondary energy. A: Coal B: Gas C: Electricity D: Oil
- If 300g of standard coal is used for 1kW.h of electric energy in a power station, the efficiency of generating electricity is (). A: 31% B: 41% C: 51% D: 61%
- The most easily oxidized coal is (). A: lignite coal B: bituminous coal C: lean coal D: anthracite coal