Refrigeration systems that use nothing more than a thermostatically controlled solenoid valve feeding a distribution system can use ____________________ or ____________________ as their refrigerant.
Fill in the blank(s) with the appropriate word(s).
nitrogen, carbon dioxide
You might also like to view...
Las herramientas eléctricas manuales portátiles representan una gran cantidad de lesiones por choque eléctrico. Una manera de evitar estos tipos de accidentes es:
a. usar disyuntores. b. usar diferentes marcas de herramientas. c. usar cables de extensión. d. conectar las herramientas a tierra correctamente.
What part of a file is inserted into the handle?
A. point B. heel C. tang D. face
Power window systems use ________ motors
A) Reversible B) Unidirectional C) Stepper D) Servo
A front-wheel-drive vehicle driveshaft must use a ________ at the outer ends of the axle, because the front wheels must be steered at sharp angles.
A) Constant velocity joint B) Universal joint C) Ball joint D) Hotchkiss joint