Which type of duct system is used on systems that have the air handler located at one end of the structure to be conditioned?
A. plenum-type duct system
B. extended-plenum duct system
C. reducing-extended-plenum duct system
D. perimeter duct system
Answer: C
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Class ____ fires involve the burning of wood, paper, cardboard, fabric, and other similar fibrous materials.
a. A c. C
Answer the following statement(s) true (T) or false (F)
1. Indexes are most useful when the study groups are small. 2. EPD data help predict the differences that can be expected between the offspring of a particular dame or sire and other offspring. 3. The data for calculating EPD data are obtained from the performance data of the progeny from animals of the same breed. 4. A large EPD is always better. 5. In a performance class, the best animal according to the performance data is always the top-placed
Which form of matter has a definite volume, but takes the shape of its container?
A) Solid B) Liquid C) Gas
Natural convection occurs because of:
A) Fans, pumps, and other mechanical devices. B) Differences in fluid density due to temperature difference. C) Naturally occurring magnetic fields surrounding the earth. D) Gentle breezes on properly placed equipment.