How does a compression cycle refrigeration system move heat from a relatively cold temperature to a relatively warm temperature?
What will be an ideal response?
It boils refrigerant at a low pressure and temperature to absorb heat inside and condenses refrigerant at a high temperature and pressure to release heat outside.
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Short-term or immediate effects of human exposure to poor IAQ may _____.
a. show up years after the exposure b. be severely crippling or fatal c. occur after a single, high-dose exposure d. require long-term medical treatment
____________________ is a diode that releases some of its current as light.
Fill in the blank(s) with the appropriate word(s).
Whether the root of the weld has excessive root reinforcement can be determined by ____.
A. visual inspection B. x-ray testing C. cutting a cross-section of the weld D. destructive testing
The standard atmospheric pressure at sea level is ____.
A. 29.60" Hg B. 29.71" Hg C. 29.83" Hg D. 29.92" Hg