Silk flowers are made of
a. only silk c. many types of fabrics
b. plastic d. none of the above
C
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The hours, location, physical activity, and variety of tasks involved in an occupation are called the
_____.
a. job flexibility c. nature of work b. educational requirements d. job security
A common application for centrifugal compressors is:
A) Industrial process chilling. B) Low temperature, commercial refrigeration. C) Residential split systems. D) Small appliances.
Which of the following is the correct order of the flow in the cooling cycle of an air-source heat pump?
A) Reversing valve, indoor coil, outdoor coil, outdoor TEV, compressor B) Compressor, reversing valve, outdoor coil, indoor TEV, indoor coil, reversing valve C) Compressor, reversing valve, indoor coil, outdoor TEV, outdoor coil, reversing valve D) Outdoor TEV, outdoor coil, reversing valve, compressor, reversing valve, indoor coil
During the vapor recovery phase what is pumped from the condenser to the storage tank?
A) cooling water B) low-pressure vapor C) high-pressure vapor D) liquid refrigerant