Explain the difference between direct current and alternating current
What will be an ideal response?
Direct current flows in one direction, alternating current regularly reverses flow.
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Not all cost or all benefits can be simply reduced to monetary terms, when calculating ROI
Indicate whether the statement is true or false
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The removal of all remaining combustion gasses from a boiler after firing is accomplished by ___________
A. pre-purge B. post purge C. blow down D. water washing
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Hybrid and electric vehicles use bright ______ wiring and warning stickers to indicate high-voltage components.
A. yellow B. orange C. red D. blue
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Roof plans provide a view looking down on the entire structure.
Answer the following statement true (T) or false (F)
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