单选题：The ship’s generator broke down, and the pumps had to be ope

  • 题目分类：成人英语三级
  • 题目类型：单选题
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题目内容：
The ship’s generator broke down, and the pumps had to be operated ___ instead of mechanically. A．artificially
B．automatically
C．manually
D．synthetically

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答案解析：

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分类：成人英语三级  题型：单选题
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