When brazing, the copper pipe is heated to ____ degrees F.
A. 300 - 500
B. 500 - 800
C. 800 - 1500
D. over 1500
Answer: D
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A radio station is broadcasting radio waves at a wavelength of 150 m. Determine the frequency of these waves.
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? Identify and state the historical significance of George Rogers Clark.
What will be an ideal response?
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The ambassadors and clergymen from which empire made a lasting impression on Florence in 1439?
a. Ottoman b. Byzantine c. Holy Roman d. Russian
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VRF systems use a refrigeration network of:
A) Headers and branch joints. B) Wyes and tees. C) Both aA and B. D) None of the above.
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