问题
单项选择题
The radiotelephone safety signal is（）.
A.securite repeated 3 times
B.safety repeated 3 times
C.pan pan repeated 3 times
D.securite securite repeated 3 times
答案
参考答案：A
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The radiotelephone safety signal is（）.
A.securite repeated 3 times
B.safety repeated 3 times
C.pan pan repeated 3 times
D.securite securite repeated 3 times
参考答案：A