practical skills

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Across
  1. 3. the decimal measuring system based on the meter, liter, and gram
  2. 4. the system of pipes required for the water supply, heating, and sanitation in a building
  3. 5. a slender threadlike object or fiber
  4. 7. a measure of electrical power expressed in watts
  5. 9. the pipe that takes all the waste water from the plumbing system of a building
  6. 10. lacking the ability or strength to move
  7. 12. an allowable amount of variation of a specified quantity.
Down
  1. 1. a simple machine consisting of a rope that unwinds from a wheel
  2. 2. manufacture sections of something to enable easy assembly on site
  3. 6. a measure of 1,000 watts of electrical power
  4. 8. a device that joins or affixes two or more objects together
  5. 11. a rigid bar resting on a pivot used to help move a heavy or firmly fixed load