In order to thread steel pipe, ____________________ must be used to make sure that friction and heat do not damage the pipe and/or cutting dies.
Fill in the blank(s) with the appropriate word(s).
cutting oil
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Briefly explain the requirements for connections used to secure a panel to a structural frame.
What will be an ideal response?
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What are the two general categories of humidifiers?
A) Atomizing and evaporative B) Packaged and split system C) Condensing and non-condensing D) Wet and dry
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Polarity of the output of an RL differentiator is determined by:
A) the polarity of the incoming pulse. B) an external clipping circuit. C) the time constant of the RL circuit. D) the placement of the inductor.
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Fan coil units used in medium temperature cases are usually defrosted using ____.
A. electric heat B. hot gas heat C. hand scraped D. unit off cycle time
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