The molecules of gases have:
A) Lower levels of energy than solids or liquids due to molecular instability.
B) Higher levels of energy than solids or liquids only when exposed to temperature changes.
C) The same levels of energy as solids and liquids when contained.
D) Higher energy levels than solids or liquids.
D
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A vehicle leaves the service facility with a problem, which of the following is TRUE?
A. The fault could be the technicians not finding the problem B. The fault could be the service consultant not properly calling it to the customer’s attention C. Both A and B are correct D. Neither A nor B are correct
La sección 230.70 del NEC® exige que los medios de desconexión del servicio sean accesibles y estén situados en:
a. el exterior. b. en el exterior o en el interior. c. el interior. d. un área de servicio aparte.
Which of the following statements is LEAST-Likely true?
A. If tires are to be replaced, the new tires should be installed before attempting an alignment. B. When correcting for road crown, camber creates less of a pull than caster. C. Caster causes the camber angle of the wheel to change during a turn. D. Roads are crowned (higher at the center than the outside) so that rain will run off.
Why should the temperature inside the compressor be kept under 300°F?
A) Because the refrigerant starts to fractionate above 300°F B) Because the metal components inside the compressor will start to melt C) Because the refrigerant starts to boil inside the compressor above 300°F D) Because the compressor oil starts to break down above 300°F