The refrigerants that a particular recovery unit is designed for can be determined by:
A) Measuring the pressure and temperature of the refrigerant in the recovery unit and comparing them to a saturated pressure-temperature chart.
B) Looking for the AHRI/UL certification label.
C) Recovery machines must work with all refrigerants to be EPA certified.
D) Trying different refrigerants, measuring the unit amp draw, and comparing against the nameplate.
B
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Two technicians named A and B, each weighing 200 lbs (90 kgs), jog a distance of one mile. Technician A completes the distance in 15 minutes and technician B completes the distance in 20 minutes. Which technician has the most power?
A. Technician A B. Technician B C. Equal power D. More information is required
Identify the type of diagram that combines the simplicity of a schematic diagram and the completeness of a wiring diagram.
What will be an ideal response?
Which of these is NOT a reproductive or sexual characteristic of a male?
a. aggressive behavior c. penis, duct, and accessory organs b. production of the hormone estradiol d. production of spermatozoa by the testes
The soil layer most seeds germinate in is the _____ horizon
a. A c. R b. C d. O