What materials can pencil cases be made of? A. Wood B. Paper C. Plastic D. Glass 相关知识点: 试题来源: 解析 C。解析:文章中提到“The pencil case can be made of different materials. Some are made of plastic, while others are made of metal.”,所以文具盒可以由塑料制成。
Hello everyone,"Dong Dong Talk Cup"is here. I started by sharing the materials for producing plastic water cups. I talked about PP, PC, AS, PS, and the characteristics of PLA materials. Yesterday, due to the length of the article, I only shared part of the content.http://www.zhanyict...
There are five basic materials. Most things are made of these materials.Metal is very heavy. And it is very hard and strong. It usually feels cool if you touch it. We use metal to make lots of things. We use it for forks and knives. We use it for keys. We use it for cars. ...
Plastics are made of synthetic materials like polyethylene and polypropylene. These materials are derived from petroleum, which is a fossil fuel. Plastics can be molded into different shapes and sizes, which makes them useful for a variety of applications. The production of plastics has increased dr...
Polyvinyl chloride (PVC) is next in terms of the most common types of plastic and is famous for its ability to combine with other materials to form strong but flexible substances. In its more rigid form, it is commonly used to construct doors, windows and construction materials, while more ...
The medicine,made up of the basic building materials of life,will build new brain cells,heart cells,and so on-in much the same way our bodies make new skin cells to take the place of old ones. G. It is exciting to imagine that the advance in technology may be changing the most ...
The impact of plastic waste on the environment According to The Ellen Macarthur Foundation4, the root cause of all this waste is the current structure of the economy: we take materials from the earth, make products from them, and eventually throw them away as waste. The foundation advocates ...
Some things are made of metal (金属). Some things are made of glass. Some things are made of wood. Some things are made of cloth. And some things are made of plastic (塑料). There are some other materials. But they are not used as much as these 5 materials....
2024 State of Design & Make Metal, concrete, and wood are the next frontiers in 3D-printing materials Mention 3D printing materials to most people, and they’ll think plastic. But new developments are bringing more options into the fold.Drew...
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