How many ft^3 and pounds of natural gas could be saved if we were to increase the average efficiency of power plants by 1% to 36%?
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What component of mechanical refrigeration systems is a device used to increase the pressure of a refrigerant in the gas phase?
A) Receiver B) Compressor C) Evaporator D) Condenser
Precision measuring instruments require which of the following care and handling for proper use?
a. Use your senses of sight and touch, which are critical for accurate and consistent measurements. b. Practice using precision measuring instruments to learn their proper feel. c. Never force or overadjust the tools when making measurements. d. All of the above are correct.
Does most of the dry weight of a live plant consist of carbon, oxygen, and calcium?
Indicate by YES (Y) or NO (N).
What is the name of the art form that is created by pruning?
a. trimming c. topiary b. topping d. shaping