If 30 oz. of refrigerant are to be added to a refrigeration system and the supply cylinder weighs 26 lb. 4 oz. before any is added, what will the supply cylinder weigh after the system has been charged?

A. 22 lb. 8 oz.
B. 24 lb. 6 oz.
C. 24 lb. 8 oz.
D. 22 lb. 4 oz.


Answer: B

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The tendons used for prestressing a PT concrete slab-on-ground generally consist of

A) two-strand tendons, each strand made of seven wires. B) a single 1/2-in.-diameter, seven-wire strand. C) a single 1/2-in.-diameter, nine-wire strand. D) three -strand tendons, each strand made of seven wires. E) none of the above.

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El resultado de dos acodamientos obtusos en direcciones opuestas en un tramo de tubería eléctrica producirá un/a:

a. desvío. b. codo de radio amplio. c. codo concéntrico. d. acodamiento.

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____ are used as door lock actuators, flow control devices such as injectors, and several other applications requiring fast response.

A. Solenoids B. Amplifiers C. Rectifiers D. Potentiometers

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The cost of the OEM replacement rail and reinforcements is $790, and a 7-hour labor time is allowed. A recycled sectional assembly is available for $450—it will take 5 hours to trim it up and an additional 6 hours to install it. With a prevailing labor rate of $45 per hour, which is the more economical repair route to follow?

What will be an ideal response?

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