The accompanying figure shows a(n) ____ edge.
A. invisible
B. temporary
C. logical
D. optional
Answer: A
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Why are phase-change (eutectic) solutions used inside the cold plates mounted in the walls or ceiling of trucks?
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The solder most commonly used on low-pressure copper fittings is made from _____
a. 100% lead b. 50% tin/50% silver c. 95% tin/5% antimony d. 45% silver/25% zinc/30% copper
Latent cooling:
A) Is an interesting theory that has not been proven. B) Reduces the air temperature. C) Removes water from the air. D) Reduces the air temperature and removes water.
Zeotropes are mixtures of two or more refrigerants:
A) That do not separate when changing state. B) That are chemically bonded to form a new refrigerant. C) That separate when changing state. D) That are electromagnetically bonded to form a new refrigerant.