The top of a standpipe riser extends up onto the roof. Three hose connections are attached to the top of the standpipe riser. These three connections make up the
A. roof manifold
B. O S & Y
C. gate valve assembly
D. release rack
Answer: A. roof manifold
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What will be an ideal response?
Prove that if F(?) is the Fourier transform of f(t),  figure 1.png)
 figure 2.png)
One unique problem with rooftop units installed in a seacoast area is that
A) the prevailing winds reduce the cooling capacity of the condenser B) systems with a high sensible capacity are required because of the low humidity in coastal areas C) codes in coastal areas typically require a minimum 3 foot ground clearance to allow for flooding D) salt spray accelerates corrosion of metallic parts, especially the condenser coil