A heat-pump room air conditioner has all the major components of a cooling only unit with the addition of a ____.
A. 3-way valve
B. 4-way valve
C. quarter-turn valve
D. line-tap valve
Answer: B
Trades & Technology
You might also like to view...
Which of the following is not one of the four main environmental science occupations?
A) geologists B) geophysicists C) ?water managers D) aquatic scientists
Trades & Technology
In pigs, _____________________ areas indicate the overall amount of muscle in a carcass.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology
?Hobbing is usually used for making ____.
A. ?multi-cavity molds B. ?single die cavities C. ?steel tools D. ?chromium tools
Trades & Technology
Sheep breeds are generally grouped according to color
Indicate whether the statement is true or false
Trades & Technology