Nitrous oxide comes from car exhausts and from chemical fertilizers. Choose the correct definition of the underlined expression according to the context.
A: oil used for driving
B: waste oil discarded
C: gas which is produced by cars
D: devices that burn oil
A: oil used for driving
B: waste oil discarded
C: gas which is produced by cars
D: devices that burn oil
举一反三
- Sulphur dioxide (二氧化硫 ) from the use of coal and oil causes much acid rain, nitrous oxide (氧化氮) which erode our ozone layer.
- Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（） A: Water discharging from the water outlet of the lube oil purifier B: Fuel oil discharging from the water outlet of the lube oil purifier C: Lube oil discharging from the water outlet of the lube oil purifier D: A change in the lube oil viscosity
- The role and position of unconventional oil and gas resources in global oil and gas production are becoming more and more important. Which of the following are unconventional oil and gas resources? A: Tight rock oil and gas B: Mud shale oil and gas C: Coalbed methane D: Oil shale E: Oil sands F: Natural gas hydrate
- Other emissions: Sulphur dioxide causes acid rain, nitrous oxide erodes the ozone layer. Both of these, mostly from coal and oil, we control 5) ____________.
- The sequence from top to bottom of oil reservoir with a Gas cap is