大学英语大学英语大学英语四级(CET4)2010年6月大学英语四级(CET-4)考试真题
题目内容

Why did the Federal Aviation Authority require the black boxes be painted orange or yellow、

2024-07-09

A.To distinguish them from the colour of the plane.

B.To caution people to handle them with care.

C.To make them easily identifiable.

D.To conform to international standards.

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