If contactor action is dependent on current flow, the contactor is described as _____.

a. electrically held
b. mechanically held
c. reversing
d. solid state


a. electrically held

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The ratio of the nominal battery ____________________ to the number of hours of battery discharge is the battery’s discharge rate.

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

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Explain ecological footprints and the IPAT equation. Compare the United States to the rest of the world in these terms

What will be an ideal response?

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Fertilization to supply the nutrient element sulfur is often accomplished by which type of application?

A) broadcast of a chloride salt B) broadcast of the nearly pure element as a solid C) incorporation of powdered limestone rock D) injection of a gas into the soil E) application of a chelate to the soil

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How is soot formed?

A) From a suction leak B) From an excessive over-fire draft C) From a clogged bypass plug D) From incomplete combustion

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