plastics
plastics
发布时间：2025-02-18 06:21:03
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相关试题
- 1.plastics
- 2.There are many kinds of plastics, ______ .
- 3.What are the features of plastics?
- 4.Most of plastics are biodegradable
- 5.Most of plastics are biodegradable
- 6.What are plastics composed of?
- 7.Plastics is in the study of organic chemistry.
- 8.________ plastics, the machine is light in weight.
- 9.Thermosetting plastics are those that do not soften when heated
- 10.Some hard plastics can be _______metals in manufacturing machine parts,
