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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

There is a drilling rig established（）position 24.1E 25.2N.

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