_ When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is$?

_ When 3-2-1 principle is used to support and locate a three dimension

1.	_ When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is$?
A.	7
B.	8
C.	9
D.	10
Answer» D. 10

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_ When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is$?

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