YoureceiveacallfromtheU.S.coastguardaddressedtoallstations.ThecallbeginswiththewordPan-Pan(3times).Whichtypeofemergencysignalwouldthisbe?()
发布于 2022-03-08 19:24:08
【单选题】
A safety signal
B urgency signal
C distress signal
D red alter signal
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