The most common solar thermal collectors are flat plate and evacuated tube. A third, less common type, ____ concentrating, uses U shaped troughs to concentrate sunlight on a tube that is placed on the focal line of the trough.
A. anabolic
B. parabolic
C. metabolic
D. hydrobolic
Answer: B
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Las cubiertas de piezas de P.V.C. se usan _____.
a. en temperaturas frÃas o moderadas b. en temperaturas moderadas o altas c. solamente en interiores d. solamente en altas temperaturas
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FCA welding guns are available as two types: water-cooled or ____________________.
Fill in the blank(s) with the appropriate word(s).
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The reproductive potential of bobwhite quail is higher than the pronghorn antelope
a. True b. False Indicate whether the statement is true or false
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What is meant by the term "blowdown"?
What will be an ideal response?
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