Why do water and refrigerant flow in opposite directions in tube-in-tube condensers?
A) To decrease pressure B) To increase efficiency
C) To increase pressure D) To decrease efficiency
B
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Which of the following is the symbol for a centrifuge?
A. 
B. 
C. 
D. 
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In a rear load-leveling air suspension system, how do you disable the system?
What will be an ideal response?
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How are the electrical properties of silicon changed?
What will be an ideal response?
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Para determinar la carga de seguridad máxima que un motor puede esperar cargar continuamente a su frecuencia y tensión nominal, el valor de caballos de fuerza se multiplica por
a. el torque. b. el factor de servicio. c. la clasificación. d. el interpolador.
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