The three classes of equipment failures are nonthreatening, important, and _____

a. debilitating
b. temporary
c. unexpected
d. critical


d

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8. Si falla el calentador en una sobrecarga bimetálica de IEC fija,

a. el calentador se debe cambiar por un calentador del mismo tamaño. b. se debe cambiar ese calentador y los demás calentadores del relé de sobrecarga. c. se debe cambiar todo el relé de sobrecarga. d. el calentador se debe cambiar por un calentador del mismo tamaño o ligeramente más pequeño

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Technician A says that the "W" in SAE 10W-40 stands for "weight." Technician B says that SA, or "nondetergent," oil should not be used in late-model automobiles. Who is right?

A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B

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Find the currents i? through i? and the voltage vo in the circuit in Fig. 3.52.

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An air-to-air heat pump system can need to be defrosted when the ambient air temperature is as high as 50 degrees F.

Answer the following statement true (T) or false (F)

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