When installing Victaulic grooved piping couplings, the coupling housing halves are tightened together until _____.

a. they split
b. you reach the required bolt torques
c. they touch
d. they have a 1/4-inch gap between them


c. they touch

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One of the biggest problems facing researchers is controlling the inbreeding that occurs between animals within a group

Indicate whether the statement is true or false

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____ catches are used to hold one door of a double set and are released by reaching to the back side of the door.

a.Friction b.Magnetic c.Elbow d.Bullet

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As the outside air temperature drops, the heating efficiency of air to air heat pumps

A) Remains the same B) Decreases C) Increases D) Is unpredictable

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The perimeter system is often used alongside a core system in:

A) Interior spaces. B) Older buildings. C) Single-story buildings. D) Larger buildings.

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