What does the absorption cycle use to create the system pressure difference needed to produce the cooling effect?
A) The absorption cycle uses pressure and heat.
B) The absorption cycle uses pressure and an absorbent fluid.
C) The absorption cycle uses heat.
D) The absorption cycle uses heat and an absorbent fluid.
D
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Which of the following terms best describes the idea that a nation's trade policy is restrictive, limiting the amount of imports from other countries?
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Digestive problems can arise from a lack of ____________________, the lactose-digesting enzyme.
Fill in the blank(s) with the appropriate word(s).
What is the purpose of the labyrinth seal (drum groove) used on a drum brake?
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