1.

Which of the following are employed in shell moulding? 1. Resin binder                2. Metal pattern 3; Heating coils Select the correct answer using the code given below:

A. 1 and 2 only                 
B. 1 and 3 only
C. 2 and 3 only                 
D. 1, 2 and 3
Answer» E.


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