The expression 0.175 - 0.841/T is the Lewis form factor for

1.	The expression 0.175 - 0.841/T is the Lewis form factor for
A.	14½° composite and full depth involute system
B.	20° full depth involute system
C.	20° stub system
D.	None of the above
Answer» D. None of the above

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The expression 0.175 - 0.841/T is the Lewis form factor for

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