In the following options, ( ) is considered as the secondary energy.
A: Coal
B: Gas
C: Electricity
D: Oil
A: Coal
B: Gas
C: Electricity
D: Oil
举一反三
- In terms of equivalent calorific value, the lowest price among coal, oil, natural gas and renewable energy is ( ). A: oil B: coal C: renewable energy D: natural gas
- Which of the following is clean source of energy () A: Coal B: Oil C: Solar D: Natural<br/>gas
- Quantity of energy contained in the atmosphere is ______. A: smaller than that in coal alone B: smaller than that either in oil or in gas that we have on Earth C: greater than that in coal, oil and gas on Earth combined D: greater than that in coal, oil and gas on Earth, respectively
- Fossil fuels like coal, oil and natural gas are non-renewable energy sources.
- Rich in coal, abundant in oil and gas, while coal is the most important basic energy and raw material in China.