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PVC and PAN have a lower Tg than amorphous polypropylene.
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PVC and PAN have a lower Tg than amorphous polypropylene.
A.正确
B.错误
正确答案：错误
Tags:
polypropylene
Amorphous
lower
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1.
Amorphous metals develop their miscrostructure as a result of（）
2.
If you cool molten metal at extremely rapid rate, amorphous metal can form
3.
Amorphous materials do not have clearly defined freezing or melting points as do crystalline materials.
4.
SBR has a lower hysteresis than polyisoprene.
5.
PVC and PAN have a lower Tg than amorphous polypropylene.
6.
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7.
The lower terms for a superordinate are（）.
8.
In amorphous solids, it is believed that the atomic structure of a glass lacks any（）which is evidenced by X-ray diffraction anal