An isothermal process is a process that does not change:
A) The state of the refrigerant. B) The temperature of the refrigerant.
C) The volume of the refrigerant. D) The pressure of the refrigerant.
B
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Joe the technician cannot work on Tuesday. Therefore, which of the following is TRUE?
A. Joe’s target hours must be removed from the capacity calculations for Tuesday B. If Tuesday is a busy day with a packed schedule, the shop will have over capacity C. Both A and B are correct D. Neither A nor B are correct
Which type of evaporative humidifier utilizes a fan to draw in air?
A) Evaporative B) Fan-powered C) Bypassing D) Atomizing
Answer the following statement(s) true (T) or false (F)
1. A well-planned piping assembly will use the largest number of fittings possible. 2. Due to thermal expansion, the greater the length of the pipe, and the greater the temperature change, the greater the change in length. 3. A feed water valve is used to increase the pressure of water from a domestic water distribution pipe before it enters a hydronic system. 4. Piping schematics are the road maps of hydronic system design. Unfortunately, there is no universal standard for piping symbols to which all those in the hydronics industry subscribes. 5. In situations where both piping and electrical wiring are in close proximity, try to keep the piping above the electrical wiring.
Explain why some parts of the world tend to be naturally covered by trees and other parts by shrubs, grasses, and other
small plants.
What will be an ideal response?