Before a system is evacuated, all piping should be ____________________.
Fill in the blank(s) with the appropriate word(s).
leak checked
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A focal length of 15 mm produces a dramatic convergent ____ perspective.
A. telephoto B. viewfield C. macro D. wide-angle
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If a gas furnace consistently cycles off on the temperature limit switch, a likely cause is _____.
a. a defective igniter b. a dirty air filter c. a defective inducer d. inadequate primary air
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When starting to weld, striking the arc is similar to ____________________
Fill in the blank(s) with the appropriate word(s).
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The sperm fertilizes the egg in the ____________________ disk, and the embryo begins to develop.
Fill in the blank(s) with the appropriate word(s).
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