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August 3, 2015

Homework Help: Technology

Posted by y912f on Tuesday, October 27, 2009 at 2:06pm.

i'm not really sure about this answer, because i didn't find it in my book. i think i'm correct. please check:
10. A wrench uses the principle of a(n)__________ in its operation.
a. lever
b. inclined plane
c. pulley
d. wheel and axle

B?

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