A-A+
The passage is mainly about ________.A) a new
问题详情
The passage is mainly about ________.
A) a new regulation for al airlines
B) the defects of electronic devices
C) a possible cause of aircraft crashes
D) effective safety measures for air flight 请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:C