2、MAYDAY是____信号A.无线电传紧急B.无线电话遇险C.无线电传安全D.无线电话紧急
2、MAYDAY是____信号
A.无线电传紧急
B.无线电话遇险
C.无线电传安全
D.无线电话紧急
参考答案和解析
PAN PAN
相关考题:
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