Options to reduce solar gain include an applied window film and exterior solar screens, which replace traditional insect screens while reducing solar gain by as much as ____%.
A. 40
B. 55
C. 70
D. 85
Answer: C
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As president, William McKinley can best be described as
A. cautious and conservative. B. a man of little ability. C. an active reformer. D. a person willing to go against the opinion of the majority. E. a skillful negotiator.
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Why should a technician not wear jewelry and metallic watches while working on a system?
What will be an ideal response?
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The torque of an electric motor is caused by the interaction of two magnetic fields, namely the main magnetic field and the magnetism created by the current flowing through the ____.
a. coil b. armature c. loop d. field
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Pumps for hydronic heating systems are usually
A) centrifugal pumps B) diaphragm pumps C) gear pumps D) piston pumps
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