1.

For ferrous alloys, the breaking of mould should be done at a temperature_____

A. 780 ‚Äö√Ö‚àûC
B. 850 ‚Äö√Ö‚àûC
C. above 700 ‚Äö√Ö‚àûC
D. below 700 ‚Äö√Ö‚àûC
Answer» E.


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