The ____ is the ratio of rise to span of a roof.
a.plumb line
b.level line
c.yaw
d.pitch
ANS: D
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The pressure switch is used to start the compressor on most systems.
Answer the following statement true (T) or false (F)
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The leaf veins are bundles of ________ tissue
A) midrib B) vascular C) ?muscle D) crown
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At what conditions are air-conditioning systems rated?
A. 95°F outdoors - 70°F DB - 50% indoors B. 95°F outdoors - 75°F DB - 50% indoors C. 95°F outdoors - 80°F DB - 50% indoors D. 100°F outdoors - 80°F DB - 60% indoors
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Argon and helium are _________________________ gases, which means they will not combine chemically with any other material, and will not affect the molten weld pool in any way.
Fill in the blank(s) with the appropriate word(s).
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