of plastics are biodegradable
of plastics are biodegradable
Always since the creation of celluloid, plastics have been found to have a multitude of industrial and commercial uses（） A: Always B: plastics C: have D: multitude
Always since the creation of celluloid, plastics have been found to have a multitude of industrial and commercial uses（） A: Always B: plastics C: have D: multitude
Many people are concerned about the growing ______ of plastics on the environment.
Many people are concerned about the growing ______ of plastics on the environment.
Modern plastics can ______ very high and very low temperatures.
Modern plastics can ______ very high and very low temperatures.
It is Boyan Slat’s school assignment that inspired him to come up with a creative method to deal with ocean plastics.
It is Boyan Slat’s school assignment that inspired him to come up with a creative method to deal with ocean plastics.
我们这学期学习Moldflow（ ）系列产品 A: Moldflow Plastics Advisers(产品优化顾问) B: Moldflow Plastic Insight(注塑成形模拟分析) C: Moldflow Plastics Xpert (MPX) D: 以上都有
我们这学期学习Moldflow（ ）系列产品 A: Moldflow Plastics Advisers(产品优化顾问) B: Moldflow Plastic Insight(注塑成形模拟分析) C: Moldflow Plastics Xpert (MPX) D: 以上都有
When making modern cameras , people began to _______ plastics for metal.选项错误的是
When making modern cameras , people began to _______ plastics for metal.选项错误的是
The possible gains from plastics retrieved from the sea will far outweigh the costs executed in the clean-up plan.
The possible gains from plastics retrieved from the sea will far outweigh the costs executed in the clean-up plan.
Plastics<br/>today contribute to a wide ______ of industries. A: field B: area C: scope D: range
Plastics<br/>today contribute to a wide ______ of industries. A: field B: area C: scope D: range
Plastics is a kind of ______ which is widely used in industry. A: mass B: substance C: matter D: material
Plastics is a kind of ______ which is widely used in industry. A: mass B: substance C: matter D: material