安全用语

单项选择题

You see an iceberg that has not been reported. What kind of radio message do you transmit to warn others?（）.

A.Safety message
B.Urgency message
C.Distress message
D.Routine message

相关考题

There is a drilling rig established（）position 24.1E 25....

单项选择题There is a drilling rig established（）position 24.1E 25.2N.

A.at
B.on
C.in
D.above

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