The predominant oil of choice for systems with HFC refrigerant is:
A) Mineral oil. B) Glycol-based oil. C) Polyol ester. D) Alkyl benzene.
C
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In semiarid regions, a metal strip called a(n) ____ can be placed on the roof to route runoff on the roof from doorways.
A. diverter B. chase C. valley D. inverter
Jay's Treaty contained all of the following provisions EXCEPT
A. a British promise to evacuate its chain of forts on U.S. soil. B. British consent to pay damages for the recent seizure of American ships. C. that Americans were bound to pay debts still owed to British merchants on pre-Revolutionary accounts. D. no promise by the British to pay for future seizure of American ships. E. a promise by the British to stop selling arms to the Indians.
Although a form of aquaculture has been practiced for over 3,000 years, it was not a
major industry in the United States until the 1950s. A. True B. False
Which of the following groups of codes represent all the invalid BCD codes?
A) 1010, 1011, 1100, 1101, 1110, 1111 B) 1001, 1010, 1011, 1100, 1101, 1110 C) 1000, 1001, 1010, 1011, 1100, 1110 D) 1000, 1001, 1010, 1011, 1100, 1101