The most commonly used material for a vapor retarder is ____ film.
a.polyamide
b.elastomer
c.polyethylene
d.acrylic
ANS: C
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Pascal's law is the basis for understanding how an ____________________ transmission works.
Fill in the blank(s) with the appropriate word(s).
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The two types of feedback loops used by a flux vector drive are __________.
A. linear position B. rotary position C. current D. speed E. both c and d
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Name the four principal hazards of improper or inadequate fuel gas installations.
What will be an ideal response?
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____________________ systems use a spark igniter (direct spark ignition) or a silicon carbide igniter (hot surface ignition) to light the main gas burner directly.
Fill in the blank(s) with the appropriate word(s).
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