What is a by-product of burned coal? -题库考试答案搜索网

What is a by-product of burned coal?

单选题

2022-11-04 14:21

A、Aluminum, silicon, and magnetic.
B、Paving material.
C、Fly ash.
D、Concrete additive.

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正确答案

C

试题解析

答案为 C。根据题干找到第一段第三句， two kinds of ash by-product are produced： a heavy bottom ash and a fine-as-powder fly ash符合题意。

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What is a by-product of burned coal?

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