One advantage that steam systems have over hot water systems is that steam systems do not require:
A) Compressor unloaders. B) Circulating pumps.
C) TXV valves. D) Bypass valves.
B
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A leader or ____________________ is an exterior vertical drainage pipe for conveying storm water from roof or gutter drains.
a. conductor b. downspout c. building sewer d. building storm drain
Moisture and temperature control is the main reason flowers are grown in _____
a. fields c. pots b. greenhouses d. cell packages
Technician A says that leaf springs are mounted length-wise on the rear of many vehicles. Technician B says that some vehicles use transversely mounted leaf springs on the rear. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
The rebar-tying method shown in the figure is called a _____
a. wrap-and-tie
b. standoff tie
c. bar hitch
d. nail-head tie