A three-way control valve reduces the flow through the coil by:
A) Sending some of the flow backwards in the direction it came from.
B) Allowing some of the flow to bypass the coil.
C) Closing and reducing the flow through the circuit.
D) Opening and closing in pulses to vary the flow.
B
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A light spray of water can be used during demolition in order to _____.
a. cool the construction debris b. clean the construction debris c. keep dust from spreading d. keep the workers cool
Under what conditions might it be desirable for a contractor to precast the concrete on the job site?
What will be an ideal response?
Excessive output can be caused by a faulty battery.
Answer the following statement true (T) or false (F)
In a single-zone constant-volume system, which floors only have provisions for cooling?
A) ground floors B) intermediate floors C) every floor D) below ground floors