To cover a door width of 6?, the number of pairs of bifold doors required is _____
a. two
b. three
c. four
d. five
a
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Simple fittings, such as elbows and tees, are ____ represented.
A. descriptively B. iconically C. textually D. pictorially
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To what pressure must water be compressed at 50°C to change its density by 1%? Assume that ? is independent of P.
Express the volume expansivity and the isothermal compressibility as functions of density ? and its partial derivatives. For water at 50°C and 1 bar, ? = 
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Alfalfa can convert atmospheric nitrogen gas to nitrates, a required plant nutrient
Indicate whether the statement is true or false.
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When mounting an engine to an engine stand, what grade bolt should be used?
A) 3 or 5 B) 1 or 4 C) 5 or 8 D) 4 or 7
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