下列属于一次能源的是？
A: coal
B: natural gas
C: wind energy
D: solar energy
A: coal
B: natural gas
C: wind energy
D: solar energy
举一反三
- Solar panels, wind turbines, hydro power and geothermal energy and hydrocarbons (natural gas or coal) can all be used to produce hydrogen (a primary energy).
- Which of the following is clean source of energy () A: Coal B: Oil C: Solar D: Natural<br/>gas
- 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
- Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy
- Fossil fuels like coal, oil and natural gas are non-renewable energy sources.