What use is THHN wire suitable for?
A) Dry locations only B) Wet or oily locations
C) Dry or damp locations D) Underground burial
C
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Answer the following statements true (T) or false (F)
1. The Clean Water Act, originally passed in 1972, was successful in achieving its stated goal of eliminating the release of "toxics in toxic amounts" by 1985. 2. The quality of water in the nation's rivers and streams has improved so much that by 2016 nearly 100% of that nation's rivers and streams had a biological condition of good. 3. The greenhouse effect refers to the physical phenomenon in which certain gases accumulate in the atmosphere and tend to warm the planet because they reflect solar radiation back to the planet. Since CO2 concentrations have increased from 250 parts per million in 1900 to almost 405 by 2016, the greenhouse effect has increased. 4. Externalities always arise because of a failure of transferability.
For most AC circuits, the product of voltage and current must be multiplied by a(n) ____________________ to determine the true power.
Fill in the blank(s) with the appropriate word(s).
What type of open-close valve is used to completely close a line so piping or equipment can be isolated for repair, inspection, or replacement?
A. gate B. ball C. butterfly D. plug
It is only safe to shift gears when the clutch separates the engine from the transmission.
Answer the following statement true (T) or false (F)