Los fusibles de un elemento tienen una velocidad de respuesta _____ ante condiciones de sobrecorriente

a. baja
b. media
c. ligeramente superior a la media
d. muy alta


d. muy alta

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A vapor retarder is necessary when _____.

a. ductwork passes through unconditioned spaces b. only in conditioned spaces c. only in cold climates d. when ducts are used for both cooling and heating

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Brass and steel have a different rate of expansion and contraction when heated or cooled.

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

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_____ catfish have deeply forked tails and a distinct bluish silver body color; they may grow to 50 pounds or more

a. Flathead b. Blue c. Channel d. Silver

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Analog signals from sensors are changed to digital signals for processing by the computer through which type of circuit?

A) Analog B) PROM C) AD converter D) Digital

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