Poured concrete is vulnerable to the corrosive effects of ____________________
Fill in the blank(s) with correct word
salt
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Which of the following best describes the role of an exhaust gas recirculation (EGR) system on a current diesel engine?
A. reduction converter B. soot filter C. dilutes the intake charge D. combusts NOx
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Why are most plastics actually beneficial in a landfill?
What will be an ideal response?
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The respirator that would be used where dust or solid particles might be inhaled is a _____
a. supplied air mask b. full facepiece mask with chemical canisters c. half mask or mouthpiece with a mechanical filter d. self-contained breathing apparatus
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The contact(s) in a current type starting relay are normally closed.
Answer the following statement true (T) or false (F)
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