Graph g(t) .
(a) g (t) = rect(t) ? rect(t/2)
(b) g (t) = rect(t ? 1) ? rect(t/2)
(c) g (t) = [rect(t ? 5) + rect(t + 5) ] ? [rect(t ? 4) + rect(t + 4) ]
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Fan coil units are primarily comprised of a(n) ____________________ and a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
Technician A says a non-contact thermometer can be used to monitor the temperature of aluminum when applying heat. Technician B says large repair areas should be heated to at least 800°F (427°C) during repairs. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
An electrician uses switch outlet boxes on eight different jobs. The number of boxes used on each job is 56, 9, 86, 36, 93, 105, 42, and 56. Find the total number of outlet boxes used.
Fill in the blank(s) with the appropriate word(s).
Which refrigerant has the lowest global warming potential (GWP)?
A) R-744 B) R-134a C) R-12 D) R-1234yf