Why should some refrigerants not be recovered?

A) Many machines hold too little refrigerant to recover.
B) Older refrigerants have mostly dissipated already.
C) Type III refrigerant cannot be reused.
D) Older machines may hold toxic chemicals.


D

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The use of technology in genetic and reproductive processes in livestock is called _____

a. aquaponics c. selective breeding b. aquaculture d. biotechnology

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Determine materials required to frame the roof for the Real Estate Office in Appendix E. Using the labor rates from Problem 7-31 and the crew rate for the rough carpentry crew from Problem 7-32 determine the cost to frame the roof.

The following data can be extracted from the model:

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Which of the following is an advantage of a tongue and groove, laminated oak floor in a unibody semi-trailer?

A. tough and weather resistant B. adds to structural integrity of frame C. withstands forklift truck and skid abuse D. all of the above

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Batter boards and string lines are erected at the building corners and selected locations on the perimeter to

establish a _____. a. grid layout b. coordinate layout c. sector layout d. squared layout

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