What is a hydronic terminal unit?
A) The coils and devices that heat the building
B) The last convector in a hydronic loop
C) A reverse return loop that is installed on the end of a hydronic run
D) A unit that is specifically designed for use in airports and train stations
A
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German inventor ____________________ designed an engine that allowed gas-powered engines to be a commercial success in 1878.
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Which of the following remains constant during condensation?
A) Density B) Enthalpy C) Temperature D) Volume
To couple two circuits together with no change in either voltage or current, use ________
A) a step-up transformer B) a power transformer C) an isolation transformer D) a step-down transformer