____________________________ heat pumps utilize two coaxial heat exchangers, as compared to only one on the water-to-air configuration.

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


Water-to-water

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?A disadvantage of straight vacuum forming is that ____.   

A. ?high pressures must force the plastics into the mold B. ?formed pieces usually must be trimmed C. ?equipment is costly D. ?processing time is long  

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Biennial weeds flower in the first year

Indicate whether the statement is true or false

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A ____ should be provided when the proposed construction requires extensive excavation.

A. grading plan B. profile C. site plan D. floor plan

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How many ignition coils are used on a Northstar engine equipped with COP ignition?

A. 1 B. 8 C. 4 D. 6

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