Semihermetic compressors on large commercial AC units use ________ to stage the compressor by cutting out individual cylinders in response to load changes
A) TXV valves B) automatic expansion valves
C) king valves D) unloaders
D
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Feeder busway sections are available in standard ____-ft lengths and in other lengths on special order.
A. 5 B. 10 C. 15 D. 20
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Information that does not encourage action is not knowledge.
Answer the following statement true (T) or false (F)
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All of the eastern European members of the EU are dependent on which supplier for almost all their energy needs?
a. Russia b. Turkey c. Iran d. Ukraine
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Chain drives should be installed initially with about a _________ sag
A. 1% B. 2% C. 3% D. 4%
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