Which of the following are necessary for best surface quality in Chemi – McqOptions

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1.	Which of the following are necessary for best surface quality in Chemical milling?
A.	Fine grain size and homogenous metallurgy
B.	Coarse grain size and heterogeneous metallurgy
C.	Fine grain size and heterogeneous metallurgy
D.	Coarse grain size and homogenous metallurgy
Answer» B. Coarse grain size and heterogeneous metallurgy

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