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單項選擇題

The radiotelephone safety signal is（）.

A.securite repeated 3 times
B.safety repeated 3 times
C.pan pan repeated 3 times
D.securite securite repeated 3 times

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單項選擇題

One of the signals，other than a distress signal，that can be used by a rescue boat to attract attention is a/an（）.

A.red star shell
B.searchlight
C.burning barrel
D.orange smoke signal

單項選擇題

On offshore drilling units，each EPIRB or SART must be tested once every（）.

A.day
B.week
C.month
D.year

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