A device used to prevent the reverse flow of a liquid is a(n) _____

A) flow switch
B) pressure-relief valve
C) check valve
D) evaporator pressure regulator


Answer: C

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Generally, _____ has a more rigid set of specifications compared to most pipe.? ?  

Fill in the blank(s) with the appropriate word(s).

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The nomenclature of Soil Taxonomy is characterized by all but which one of the following statements?

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