According to the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), the minimum vacuum level in a system should be __________ microns.
A. 1,000
B. 2,000
C. 3,000
D. 5,000
Answer: A
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One British thermal unit (Btu) contains ____ calories.
A. 144 B. 212 C. 252 D. 970
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All of the information in the BIM model is current, including
A. ?estimated dimensions B. ?interpreted dimensions C. ?all approved changes D. ?some approved changes
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What is the purpose of a wheel bearing?
A) Transfer weight B) Reduce friction C) Both A and B D) Neither A nor B
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If the frequency decreases in Figure 13-1, the impedance ________ and the phase angle ________
A) decreases, increases B) decreases, decreases C) increases, decreases D) increases, increases
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