A(n) _________________________ and hose on the siphon spray gun allow atmospheric pressure to enter the cup.

Fill in the blank(s) with the appropriate word(s).


air vent hole

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The only two species of rat that have been domesticated are the black rat and the _____ rat

A) white B) brown C) grey D) orange

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PV arrays work best when the sun’s rays shine ___________ to the cells because of the effect of tilt angle.

a. parallel b. perpendicular c. level d. plumb

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Hysteresis is a characteristic of magnetic materials wherein a change in magnetization:

A) varies according to the current flow. B) occurs exactly with the application of a magnetic force. C) occurs after the application of a magnetic force. D) occurs before the application of a magnetizing force.

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In the early phases of a project, the project manager needs to develop a _____.