2. 外语
  3. A、Mechanical failure. B、Heavy traffic. C、Extreme weather. D、Human error. D

A、Mechanical failure. B、Heavy traffic. C、Extreme weather. D、Human error. D

admin2021-09-17  152
问题
选项 A、Mechanical failure.
B、Heavy traffic.
C、Extreme weather.
D、Human error.
答案D
解析
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大学英语六级

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