Official 50 Lec 1
Question 3 of 6
The professor describes a process for making glass disks. Summarize the process by putting the steps in the correct order.

A.

Crushed quartz and plant ash are heated at low temperatures

B.

Glass-like material is ground up and dyed blue or red

C.

Powdered material is heated at very high temperatures

D.

Containers are broken to remove glass disks

正确答案:ABCD

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