____ also is known as straight polarity.
A. DCEP
B. DCEN
C. DCAC
D. AC
Answer: B
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____________________ were employed by the railroads to carry ties, rails, and supplies to the railheads, and to haul dirt and rock from the excavation of mountain tunnels.
Fill in the blank(s) with the appropriate word(s).
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What is the sign of fungus or mold?
What will be an ideal response?
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The LeClanché cell is also known as a(n) _____ cell.
A. alkaline B. carbon-zinc C. silver zinc D. nickel-cadmium
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Sheet metal thicknesses up to .50 in. (13 mm) are usually designated by gage numbers.
Answer the following statement true (T) or false (F)
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