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Thermosetting plastic materials

A. Can be repeatedly melted

B. Is useful for melt casting

C. Cannot be melted after forming

D. Is useful for spinning

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  6. Starting raw material for the manufacture of alum is
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  18. Synthesis gas is a mixture of
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  20. The combustion reaction, C + O2 = CO2, is
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  22. Enamels
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