A: metal
B: air
C: water
D: coal
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
- Fossil fuels like coal, oil and natural gas are non-renewable energy sources.
- Burning coal, oil and natural gas are ways to reduce carbon dioxide in the atmosphere.
- Softening Claims” Using natural gas instead of coal ______ prevent air pollution”
- When conventional heating cannot be avoided, the energy carrier will define carbon emissions. What is the order of coal, oil, and natural gas? A: oil < gas
内容
- 0
The U.S. is the world’s largest producer of oil and _______. （ ）。 A: Iron B: Gold C: Coal D: Natural gas
- 1
Which of the following is clean source of energy () A: Coal B: Oil C: Solar D: Natural<br/>gas
- 2
Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy
- 3
Burning coal, oil, and natural gas has serious and ___ negative impacts on public health. A: habitable B: close C: negligible D: long-standing
- 4
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