A 20 km long road would be a line ________ cm long on a 1:200,000 scale map
A) 2 B) 10 C) 20 D) 40 E) 100
B
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A safer alternative to de-brazing components is to:
A) Pressurize the system with 100 psig of nitrogen prior to de-brazing. B) Cut the components out with a hack saw. C) Melt through the pipe with a cutting torch. D) Cut them out with a tubing cutter.
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What methods can be used to join hard copper?
What will be an ideal response?
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The most common weld defect caused by surface contamination is _____
a. scale b. porosity c. brittleness d. layering
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The poles in a synchronous motor that project outward are called __________ poles.
A. amortisseur B. salient
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