--The electrical unit used in this study generated 115 volts and 600 to 700 watts, alternating current. [Please select]
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The most recent epoch of geological time, the Pleistocene, is known to have been divided into a series of alternating glacial and interglacial ages. [Please select]
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Alternating currents were transformed by means of this instrument at the source, and were again converted at the point of use to a lower and convenient potential for local distribution and consumption. [Please select]
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