of plastics are biodegradable
举一反三
- Which of the following 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
- Many people are concerned about the growing ______ of plastics on the environment.
- Modern plastics can ______ very high and very low temperatures.
- 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