Exam (elaborations)
Journeyman plumber Quiz 1- 6 Questions With Complete Solutions
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T/F: Refining iron-ore requires extreme heat and a reducing agent to draw oxygen out of the iron-ore. This reducing agent, called coke, is a grayish-black substance composed mostly of carbon. correct answer: True GIVEN: Lead-and-oakum joints are strong. Plumbers make these joints by pouring mo...
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