Water-cooled chillers must have water treatment to ____.
A. increase the pH content of the water
B. decrease the pH content of the water
C. minimize mineral and algae deposits
D. help preheat the water in the condenser circuit
Answer: C
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The foreign exchange rate affects agriculture because
A) A weaker dollar makes imports of inputs used by U.S. farmers. B) A weaker dollar makes depresses the export demand for U.S farm commodities. C) A stronger dollar enhances the export demand for U.S. farm commodities. D) None of the above.
When installing heating cable, fasten the cable to the pipes using fiberglass tape or _____.
a. duct tape b. metal attachments c. plastic cable ties d. vinyl electrical tape
Which of the following refrigerant oils is glycol-based?
A) Alkylbenzene B) POE C) PAG D) PVE
Subtract the following numbers to obtain the difference:1,971 - 1,019 =
What will be an ideal response?