问题
单项选择题
In the International Code of Signals，the code signal meaning I require immediate assistance is（）.
A.AE
B.CB
C.DX
D.CP
答案
参考答案：B
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In the International Code of Signals，the code signal meaning I require immediate assistance is（）.
A.AE
B.CB
C.DX
D.CP
参考答案：B