A compressor that compresses gas between a fixed spiral and an orbiting spiral is a:
A) Scroll compressor. B) Screw compressor.
C) Centrifugal compressor. D) Rotary compressor.
A
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What is the name for weld pins which have a pre-assembled washer?
a. Cup-head weld pins b. Disc-head weld pins c. Self-retaining pins d. Pre-assembled weld pins
Cuando se calculan los requisitos de servicio de un edificio en particular, el primer paso lógico en cualquier cálculo es:
a. aplicar todos los factores de demanda. b. calcular la carga total del motor. c. determinar todas las cargas continuas. d. calcular la superficie del piso del edificio.
A rectangular solid has ____________________ rectangular faces.
Fill in the blank(s) with the appropriate word(s).
Why are direct digital control systems (DDC) sometimes referred to as energy management systems?
What will be an ideal response?