Which of the following units are used in terms of penetration of pits – McqOptions

MCQOPTIONS

1.	Which of the following units are used in terms of penetration of pits on a metal?
A.	Milligram sq. decimeter per day (MDD)
B.	Mils per year (MPY)
C.	Both MDD and MPY
D.	Neither MDD nor MPY
Answer» C. Both MDD and MPY

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