Natural gas give less carbon dioxide than coal.
A: up
B: in
C: down
D: off
A: up
B: in
C: down
D: off
举一反三
- Natural gas__1__less carbon dioxide than coal.(give)
- Burning coal, oil and natural gas are ways to reduce carbon dioxide in the atmosphere.
- Natural gas has a higher heating value than coal.
- Natural gas can ______ these clean resources and is cheaper than coal. A: compete B: complement C: compliment D: compare
- 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