What are geothermal heat pumps?
What will be an ideal response?
Geothermal heat pumps move energy from the ground in winter to a structure using the standard refrigeration cycle and can cool the building in summer by reversing the cycle.
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Hoisting operations must be halted when winds exceed _____.
a. 5 to 10 mph b. 10 to 15 mph c. 15 to 25 mph d. 25 to 30 mph
Electric switching devices such as contactors and relays rarely cause electrical problems.
Answer the following statement true (T) or false (F)
Which of the following would be more likely to cause an air compressor to cycle frequently and build air pressure slowly?
A. alcohol evaporator empty B. discharge valves leaking C. rings passing oil D. all of the above
The P&ID symbol 
indicates that this instrument is field mounted.
Answer the following statement true (T) or false (F)