Much of the new gas is coming from what were once called “unconventional” sources, such as the shale gas.
A: irregular
B: unusual
C: indifferent
D: non-traditional
A: irregular
B: unusual
C: indifferent
D: non-traditional
举一反三
- 中国大学MOOC: Much of the new gas is coming from what were once called “unconventional” sources, such as the shale gas.
- 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
- __________ is natural gas that is found trapped within shale formations. It has become an increasingly important source of natural gas in the United States since the start of this century. A: Methane B: Shale gas C: Coal gas
- The gas mask can ______ you against poison gas.
- Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy