题目内容
(请给出正确答案)
[主观题]
A radiotelegraph message commencing with XXX has the same meaning as a message sent by the
radiotelephone commencing with ______.
A.TTT
B.SOS
C.The spoken word URGENCY
D.The spoken word PAN
提问人:网友wuhuqq
发布时间:2022-01-07