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
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
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