材料可分为哪些类？
A: Metals
B: Ceramics
C: Polymers
D: Composites
A: Metals
B: Ceramics
C: Polymers
D: Composites
举一反三
- Consider a cement wall reinforced with steel bars. Into which category of materials would you place reinforced concrete? A: Metals B: Non Metals C: Composites D: Ceramics
- A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers.
- What category of materials were likely the first man-made materials?: A: Copper Alloys B: Ceramics C: Composites D: Concrete E: Semiconductors
- A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers. A: 正确 B: 错误
- 硬质合金刀具材料的英文是（） A: CementedCarbide B: Ceramics C: PolyCrystallineDiamond D: CubicBoronNitride