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1. |
In hot box process, core box is heated up to what temperature? |
A. | 220°F – 300°F |
B. | 250°F – 320°F |
C. | 350°F – 500°F |
D. | 420°F – 550°F |
Answer» D. 420¬¨¬®‚Äö√†√ªF ‚Äö√Ñ√∂‚àö√ë‚àö¬® 550¬¨¬®‚Äö√†√ªF | |