题目内容

Casting can be applied to shape any metal that can melt.

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Casting can produce very large parts with weight more than 110 tons.

Some casting processes are net shape; others are near net shape.

The term casting also applies to the part made in the process.

Pure metal solidifies at a ( )temperature equal to its freezing point (same as melting point).

A. Constant
B. Different
C. Fluctuant
D. None of the above

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