Increased air （） will raise scavenge efficiency and allow a greater mass of air to be compressed； more fuel may now be burned giving an increased power.
举一反三
- Chicago School economists argued that increased efficiency led to increased market power and increased profits。（ ）
- Chicago School economists argued that increased efficiency led to increased market power and increased profits. A: 对 B: 错
- Harvard School economists argued that increased efficiency led to increased market power and increased profits. A: 对 B: 错
- Increased air pollution __________ respiratory illness.
- Car-rental companies expect more rentals this summer, despite ______. A: the poor economy B: increased air travel C: increased ownership of private cars D: higher gasoline prices