Emergency Care and Transportation of the Sick and Injured ...

13. Pistons are composed of aluminum alloy. a. Alloy: a combination of materials that has properties that are different than the original metals. b. Aluminum alloys are lightweight and strong. 14. Pistons come in many styles of crowns. a. Dished, domed, flat top. b. Ceramic coatings on pistons improve lubrication and reduce heat absorption. E ... ................
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