Helium is ____.
A. a by-product of the natural gas industry
B. heavier than air
C. much cheaper than argon
D. used with alternating current
Answer: A
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Heated alkaline materials cut grease very well.
Answer the following statement true (T) or false (F)
NMTeX Oil owns several gas wells in Carlsbad, NM. Revenue from the wells has been increasing according to an arithmetic gradient for the past 5 years. The revenue in year 1 from well no. 24 was $390,000 and it increased by $15,000 each year thereafter. Determine (a) the revenue in year 3, and (b) the equivalent annual worth of the revenue through year 5. Assume an interest rate of 10% per year.
What will be an ideal response?
____ machines are adjusted by turning a handwheel that moves the internal parts closer together or farther apart.
A. Movable coil B. Tap type C. Inverter D. Transformer
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What will be an ideal response?