What force is used to open the exhaust valves on a typical internal engine compression brake?

A. electro-mechanical
B. electrical
C. hydromechanical
D. mechanical over electric


Answer: C

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? Identify and state the historical significance of Zachary Taylor.

What will be an ideal response?

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From what material are ceramic filters normally constructed?

A. Quartz B. Crystal C. Lead zirconate-titanate D. Lithium niobate

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How warm is the supply air of an electric furnace compared to gas or oil fired furnaces?

A) Supply air temperatures for electric furnaces are higher B) Supply air temperatures for electric furnaces are lower than oil furnaces, but higher than gas furnaces C) Supply air temperatures are about the same D) Supply air temperatures for electric furnaces are lower

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All of the following are method of detecting refrigerant leaks EXCEPT:

A. Halogen detector B. Soap solution C. hepide detector D. Fluorescent dye

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