The energy conversion can take place _______.
举一反三
- Nightmares can take place in broad daylight while daydreaming can take place at night.
- Some hard plastics can ______ metals in manufacturing machine parts. A: take place at B: take the place for C: take place of D: take the place of
- You can take exercise to get energy such as______the stairs
- A personal interview only can take place in the street.
- Energy conversion efficiency (η) is the ratio between （ ）and （ ）.