Which one is suitable for metal-casting?
举一反三
- Centrifugal casting is suitable to produce ( ).
- Some parts of metal furniture are most suitable for stamping and bending, which is a typical non chip and less chip processing technology.
- which one can directly contact with water？ A: Sodium metal B: Calcium carbide C: Metal hydride D: Sulphur powder
- Which is not one of the Five Elements? A: Air B: Metal C: Earth D: Wood
- 中国大学MOOC: When introducing one’s hobby, which of the following is not suitable? ( )