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1. |
In shell core making, the core box is heated up to what temperature? |
A. | 400°F – 600°F |
B. | 500°F – 700°F |
C. | 600°F – 800°F |
D. | 800°F – 1000°F |
Answer» B. 500¬¨¬®‚Äö√†√ªF ‚Äö√Ñ√∂‚àö√ë‚àö¬® 700¬¨¬®‚Äö√†√ªF | |