Why is it recommended to measure by weight the refrigerant charge into the system?
What will be an ideal response?
Charging by weight of the refrigerant is the most accurate method.
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What branch of economics is concerned with interest rates and the gross domestic product (GDP) of the U.S. economy?
A) Normative economics B) Positive economics C) Microeconomics D) Macroeconomics
If an acetylene cylinder is tipped over, stand the cylinder upright and wait at least _____ minutes before using it.
a. 10 b. 15 c. 30 d. 45
The presence of large numbers of formal and inflexible policies will
a. increase subordinate maturity. b. make it necessary for a leader to be more supportive. c. require the leader to be more directive. d. substitute for some forms of leadership. e. have little impact on required leadership.
The first number in a wrought-aluminum designation indicates the _____
a. hardness factor b. aluminum purity c. alloy modification d. principal alloying element(s)