-7 + -13 + 4 + -5 = ____.
A. -21
B. -20
C. 21
D. 0
Answer: A
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Flare connections are used on mini-split systems to avoid oxidation in the lines and also to avoid heating and destroying the sensitive electronic expansion valves use in the outdoor units
Indicate whether the statement is true or false
The expansion tank provides a means of removing the air from the system as well as provides ____.
A. a space for excess water from the supply source B. water for the domestic hot water coil C. a space for the water expansion and contraction with water temperature changes D. All of the above.
The environment includes the air, soil, and:
a. Light c. Organisms b. Temperature d. All answers are correct.
Consider a product where the total market demand is 8,000 units per year. If market research shows that the market is price sensitive and k=100, then when the price is set at $50, the demand per year is for:
A. 4,500 units B. 2,000 units C. 3,000 units D. 6,000 units