Las barreras de vapor DEBEN instalarse en

a. cualquier tubería o equipo que funcione por debajo de la temperatura ambiental.
b. tuberías calientes.
c. servicios de calorífugado con vapor.
d. protección personal.


a. cualquier tubería o equipo que funcione por debajo de la temperatura ambiental.

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The placenta should be expelled within _____ hours after the calf is born

a. 2 c. 6 b. 4 d. 8

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A plunger in a port-helix metering pump with a lower helix would produce which of the following timing characteristics?

A. variable beginning, variable ending B. variable beginning, constant ending C. constant beginning, variable ending D. constant beginning, constant ending

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The subsequent problems deal with the circuit below where the op amps are LM741's powered by a ±15 V power supply. Assume R1 = R2 = R3 = R4 = R. Assume the op amps are ideal.If Vi = 20 V, V1 (for the "real" LM741) would be approximately

A. 20 V B. 13.6 V C. 0 V D. 5 V E. 10 V

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When the plies are parallel to the tire's radius, then the tire is of what type construction?

What will be an ideal response?

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