?
Identify and state the historical significance of the "three Rs".

What will be an ideal response?



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____ is circulated by the water pump through water jackets in the engine's cylinder block. It carries heat to the radiator, where it can be carried away by the outside air.

A. Torque B. Coolant C. Fuel D. Steam

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While electrolytes lend their name to the individual fuel cells, it is the ____________________ that produce electricity because that is where the electrons’ journey starts and ends.

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

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Which isotope is indicative ?of life being present?

A) ?hydrogen B) ?argon C) ?carbon D) ?sodium

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Profibus-DP is a bus that ________

A) Is used for communication between distribution systems and PLCs B) Supports both analog and discrete signals C) Is used for process-level instrumentation D) Supports process control

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