2019英语阅读

What is said about the over 100 aircraft incidents in the past 15 years?

发布于 2021-02-03 17:59:32

【单选题】
A They may have been caused by the damage to the radio systems.
B They may have taken place during take-off and landing.
C They were proved to have been caused by the passengers’ portable computers.
D They were suspected to have resulted from electromagnetic interference.

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