CC Commercal Element 3 Queston Pool

3-3A1 What metal is usually employed as a sacrificial anode for corrosion control purposes? A. Platinum bushing. B. Lead bar. C. Zinc bar. D. Brass rod. 3-3A2 What is the relative dielectric constant for air? A. 1. B. 2. C. 4. D. 0. 3-3A3 Which metal object may be least affected by galvanic corrosion when submerged in seawater? A. Aluminum ... ................
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