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 was the black box redesigned in 1965、

2024-07-09

A.New materials became available by that time.

B.Too much space was needed for its installation.

C.The early models often got damaged in the crash.

D.The early models didn't provide the needed data.

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