2. 职称英语
  3. The processing of sewage(污水) requires considerable amounts of electricity. Many

The processing of sewage(污水) requires considerable amounts of electricity. Many

游客2025-03-16  55
问题 The processing of sewage(污水) requires considerable amounts of electricity. Many sewage treatment plants in the U.S. have become self-sufficient by using the methane gas (沼气)given off by sewage.
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答案 污水处理需要大量的电。美国的许多污水处理厂通过使用污水排放出的沼气实现电的自给自足。
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