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Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean by water layers of different temperatures and densities.a. prevented from dissipating its acoustic energy as a result of b. prevented from having its acoustic energy dissipated by c. its acoustic energy prevented from dissipating by d. its acoustic evergy prevented from being dissipated as a result of e. preventing its acoustic energy from dissipating by
为什么答案选c啊。。。。。。。 e哪里错了。。。请大牛指点。 |
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