A person who is job shadowing is not required to wear personal protective equipment
Indicate whether the statement is true or false
FALSE
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What will happen if the AIR system delivers air to the exhaust manifold during closed loop operation?
What will be an ideal response?
Care must be taken in melting certain copper alloys to prevent absorption of hydrogen from the furnace gases or as a result of reaction with water vapor. The release of this gas on freezing can result in an open porous structure of little value. As an exercise, compute the volume of hydrogen that should be released in 10 cc of copper melted in a hydrogen atmosphere at a pressure of one atmosphere when the metal is frozen. The atomic volume of copper is 7.09 ??? per gm atom. Assume the ideal gas law and refer to Fig. 14.41.
What will be an ideal response?
The remote condensing unit of a walk-in refrigerator and an A/C system are installed next to each other outside a building. They both use R22 and the outdoor ambient is 95°.
The walk-in unit’s condensing temperatures will be: a. About the same as the A/C unit. b. Much higher than the A/C unit. c. Much lower than the A/C unit.
Pre- and post-consumer recycled content accounts for a small percentage of the materials used to manufacture most roofing products.
Answer the following statement true (T) or false (F)