The refrigerant metering device used on most PTAC units is
A) The thermostatic expansion valve
B) The low side float
C) The electronically controlled stepper motor expansion valve
D) The capillary tube
D
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Gerbils are occasionally affected by ____________________, which are usually observed during handling
Fill in the blank(s) with correct word
When Germany invaded the Soviet Union in 1941, the United States
A. promised aid to the Soviets but did not deliver. B. refused to provide any military or economic assistance. C. gave only nonmilitary aid to Russia. D. made lend-lease aid available to the Soviets. E. sent U.S. ships to Soviet naval bases.
The chemical components of HCFC refrigerants are:
A) Helium, carbon, Freon, and chlorine. B) Hydrogen, chlorine, Freon, and chromium. C) Hydrogen, chlorine, fluorine, and carbon. D) Helium, carbon, frankincense, and Clorox.
The most important factor when installing interference fit bearings by heating them is _____
a. timing b. lubrication c. cooling d. pressure applied