The U.S. smart grid is developing primarily using ___________________ communication to transmit information.
Fill in the blank(s) with the appropriate word(s).
radio frequency (RF)
radio frequency
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?____ refer(s) to a system of numbers along the top and bottom margins of a sheet and letters along the left and right margins of a sheet.
A. ?Scales B. ?Zoning C. ?Standards D. ?Modifiers
Technician A says in the ISAD system, the stator of the unit is mounted to the engine block. Technician B says the stator of the ISAD system is mounted on the end of the crankshaft of the engine. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Who performed the key research on the engine cycle and heat, that made the work of Otto and Diesel possible?
A. Volta B. Lenoir C. Carnot and de Rocha D. Volta and Trevithick
An unshielded sensor uses the ____________________ (radial, axial) approach by detecting objects ____________________ (only in front of the head, to the front or side of the head).
Fill in the blank(s) with the appropriate word(s).