The most effective method of checking the heating elements of an electric furnace during operation is:
A) Measuring the temperature of each heat strip. B) A visual inspection.
C) Checking the resistance of each heat strip. D) Checking the amp draw of each heat strip.
D
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Which of the following are considered to be man-made features?
a. Streams b. Trees c. Reservoir dams d. Rivers
Interesting 21st century plant projects include major settings such as ____, where entire vertical planes
are covered with plants.
a. industrial sites c. large-scale greenscaping projects b. modern hanging gardens d. green walls
What was the most radical impact of the publication of the Encyclopédie?
a. Its radical political essays inflamed public opinion. b. Government censorship led to increased interest, readership, and book sales. c. It gave ordinary people easy access to practical, valuable knowledge. d. Its attacks on religion led to papal and royal bans on reference works.
How is a hot water boiler pressure relief valve tested?
A) By jumping the aquastat and limit, forcing the boiler to operate until the pressure relief valve opens B) By checking the continuity of its operating coil C) By lifting the lever located on top of the relief valve D) By slowly adding nitrogen pressure until the relief valve opens