Air filters should be placed in the __________ of the forced air system.

A. return
B. supply
C. either a or b
D. neither a nor b


Answer: A

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Power tools require greater safety measures than hand tools.

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

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Which method of application generally would require the greatest amount of iron to alleviate an iron deficiency in an orange grove?

A) application of iron chelate to soil evenly with thorough mixing B) application of iron sulfate to soil in localized pockets C) application of iron chelate to the soil in localized pockets D) foliar spray of iron chelate E) application of iron sulfate to soil evenly with thorough mixing

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How does dye indicate system leaks?

A) The dye highlights small cracks when rubbed over the outside of the joint. B) Dye makes the refrigerant oil spots more visible. C) The dye reacts with the refrigerant, making the inside of the system glow. D) Dye gives the refrigerant a color, so it looks like a psychedelic cloud escaping from the system.

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The Seebeck effect occurs when pressure is applied to a crystal so that the crystal deforms and produces a small voltage

Indicate whether the statement is true or false

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