The water supplied to electric refrigerated drinking fountains is typically cooled to around _____

a. 40°F
b. 50°F
c. 60°F
d. 70°F

b

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Windows are expensive additions to farm buildings and, to keep costs at a minimum, they are are being used less and less.

Answer the following statement true (T) or false (F)

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Metal furring may be used on ceilings and walls by applying them at ____ angles to joists or studs.

a.obtuse b.acute c.right d.variable

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What opens and closes the valves in a reciprocating compressor?

A) A cam shaft B) Pressure difference across the valves C) Hydraulic valve lifters D) The piston pushes them open

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A(n) ____ is used to store and release electrical energy.

A. cell B. farad C. capacitor D. charge

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