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泡沫石棉的主要生产原料是( )
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泡沫石棉的主要生产原料是( )
A、岩棉
B、玻璃棉
C、冷石棉
D、温石棉
时间:2021-09-02 13:45
关键词:
国家开放大学
建筑材料(A)
答案解析
D
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