2. 外语
  3. The Aeroscraft is not a Blimp because it is much larger than the latter though______. The power that the Aeroscraft needs is pr

The Aeroscraft is not a Blimp because it is much larger than the latter though______. The power that the Aeroscraft needs is pr

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问题 The Aeroscraft is not a Blimp because it is much larger than the latter though______.
The power that the Aeroscraft needs is provided by______.
选项
答案a renewable source such as hydrogen fuel cells
解析 本文的第五段中提到：“the aft-mounted propellers will be electric，powered by a renewable source such a as hydrogen fuel cells”。虽然句型作了改写，但是Aeroscraft的动力来源还是“可更新能源如氢燃料电池”。
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