____________________ is a transparent substance manufactured by heating a mixture of sand, soda (sodium carbonate), limestone, and other materials to a temperature of about 2,400°F (1,300°C).
Fill in the blank(s) with the appropriate word(s).
Glass
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In absolute positioning, all process locations are given as distances from a ____.
A. zero point B. maximal point C. predefined point D. central point
Which of the following is the correct order of the flow in the cooling cycle of an air-source heat pump?
A) Reversing valve, indoor coil, outdoor coil, outdoor TEV, compressor B) Compressor, reversing valve, outdoor coil, indoor TEV, indoor coil, reversing valve C) Compressor, reversing valve, indoor coil, outdoor TEV, outdoor coil, reversing valve D) Outdoor TEV, outdoor coil, reversing valve, compressor, reversing valve, indoor coil
Compared to centrifugal chillers, screw chillers generally:
A) Are physically larger for comparable capacity. B) Operate at lower compression ratios. C) Are arranged in multiple stages to improve compression ratio. D) Are physically smaller for comparable capacity.
When installing a split air-conditioning system with a remote condensing unit, the liquid line, suction line, and low voltage wire can be bundled together and run as a single piece from the condensing unit to the air handler.
Answer the following statement true (T) or false (F)