What is the purpose of a wheel bearing?
A) Transfer weight B) Reduce friction C) Both A and B D) Neither A nor B
C
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The tank in the figure has a diameter of 15” and a length of 32”. What is its area, in square inches? Give the answer to the nearest thousandth.
pi=3.14
Area of a Cylinder = 
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When does secondary air combine with gas?
a. before combustion b. during combustion c. after combustion d. none of the above
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Oxygen may be depleted by hot summer nights
Indicate whether the statement is true or false
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Animals raised in disease-free environments cost less and pose less risk.
Answer the following statement true (T) or false (F)
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