Passive solar uses natural methods of ____ and does not employ mechanical equipment.

A. air flow
B. heat flow
C. water flow
D. heat storage


Answer: B

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Floral foam is sufficiently soaked when _____

A) it changes to a darker shade of green B) the foam floats back to the top of the water C) ?particles of the foam begin to float in the water D) air bubbles are no longer coming out of the foam

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Motor oil is being discussed. Technician A says that the "W" in 10W-30 stands for "weight." Technician B says that thicker oils can cause lubrication problems in colder climates. Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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Which of the following could be a reason for poor cold engine performance?

A) Insufficient fuel volume B) Contaminated fuel C) Low fuel pressure D) All of these are correct

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After the dark box is defined:

A) planning should begin. B) synthesis and testing begin. C) problem statement should be made. D) specifications should be stated.

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