In a grinding wheel marked with AA-48-L-7-V- 25, L refers to

1.	In a grinding wheel marked with AA-48-L-7-V- 25, L refers to
A.	abrasive type
B.	wheel structure
C.	wheel hardness
D.	manufactures code
Answer» D. manufactures code

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In a grinding wheel marked with AA-48-L-7-V- 25, L refers to

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