Which of the following is true of perpetual energy?
A. It is everlasting.
B. There is no perpetual energy device today.
C. A machine or device cannot produce more energy than it consumes.
D. All of the above
Answer: D
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A ____ consists of steel plates bolted between wood members.
A. full beam B. buttress beam C. flitch beam D. strut beam
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What are the chemical components of HFC refrigerant?
A) Hydrogen, fluorine, and carbon B) Hydrogen, Freon, and chromium C) Helium, Freon, and chlorine D) Helium, fluorine, and chlorine
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The formula for a building area in square feet is A=________.
Fill in the blank(s) with the appropriate word(s).
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To prevent a tipover when driving a rough terrain forklift, keep the load _____
a. light b. low c. high d. heavy
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