Products which are made
from dirt ____ and are high temperatures are known as ceramics.
A: tempered in
B: subjected to
C: exposed to
D: baked in
from dirt ____ and are high temperatures are known as ceramics.
A: tempered in
B: subjected to
C: exposed to
D: baked in
举一反三
- Expendable molds , which typically are made of sand, plaster, ceramics, and similar materials and generally are mixed with various binders(bonding agents) for improved properties. These materials are refractories (that is, they are capable of with standing the high temperatures of molten metals). After the casting has solidified, the mold is broken up to remove the casting.
- Which of the following environmentally friendly goods does the speaker mention? A: Any kind of chocolate. B: Non-toxic cleaners. C: Products made from plants. D: Goods made from materials that are good to health.
- When two or more products are produced from a common input these products are known as by products A: 正确 B: 错误
- 中国大学MOOC: When two or more products are produced from a common input these products are known as by products
- A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers.