What is the main chemical advantage of R-134a refrigerant over R-12 refrigerant?
What will be an ideal response?
R-134a does not contain chlorine, which is an ozone-depleting gas.
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Kitchen cabinets have two basic elements:
A. the base cabinet B. the upper cabinet C. all of the above D. none of the above
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?In SAW, the molten weld pool is protected from the surrounding atmosphere by ____.
A. ?shielding gas B. ?self-shielding electrodes C. ?oxygen in the air D. ?molten flux and slag
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Shifts in food supply and demand are generally accompanied by proportionately larger price changes
Indicate whether the statement is true or false
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How is a cracked drum serviced?
What will be an ideal response?
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