Daily Question: [Corrosion and Protection] 2011-06-18 (Saturday)

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This post was last edited by eastchen on 2011-6-18 at 17:31. Daily question: [Corrosion and Protection] 2011-06-18 (Saturday). As the quality of people’s lives continues to improve, the issue of centralized disposal of used batteries has come to the forefront. The primary reason for this is A. to utilize the metal materials in the battery casings; B. to prevent heavy metal ions such as mercury, cadmium, and lead from contaminating the soil and water sources; C. to avoid damage to other items caused by the electrolyte that leaks from the batteries; D. to recycle the graphite electrodes contained within them. 1) Please give your support – those who participate will receive a reward； P 2) Please hide your reply answers; the method to do this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit your reply after posting it. 3) The answer is as follows: B