What is the benefit of the revolution mentioned in the first paragraph? What element enables the ceramic tape to lower its temp

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问题 What is the benefit of the revolution mentioned in the first paragraph?
What element enables the ceramic tape to lower its temperature?

选项 A、Copper.
B、Liquid nitrogen.
C、Clay.
D、Calcium.

答案B

解析

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职称英语理工类A级

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