單項選擇題While proceeding to a distress site，you hear the words “Seelonce mayday” on the radiotelephone.Which action should you take（）.

A.Resume base course and speed as your assistance is no longer required
B.Acknowledge receipt and advise your course，speed，and ETA
C.Relay the original distress message as no other vessel has acknowledged it
D.Monitor the radiotelephone but do not transmit


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1.單項選擇題Which step should be taken，if possible，when the vessel must be abandoned because of a distress situation（）.

A.Alert the Coast Guard by using the survival craft's portable INMARSAT unit
B.Program the SART and EPIRB to transmit the vessel's location and situation
C.Place the SART and EPIRB in the“ON”position and secure them to the survival craft
D.No additional steps are needed as the SART and EPIRB will both automatically float free and operate properly

2.單項選擇題Which statement about radio navigational warnings is TRUE（）.

A.The topics for warnings included in HYDROLANTS，HYDROPACS，and NAVAREA warnings are the same
B.NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound
C.The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N，and west of 15°W
D.Long range radio navigational warnings are usually broadcast by radiotelephone，radiotelegraph，and radio-teletypewriter

3.單項選擇題Which instrument is most useful in forecasting fog（）.

A.A barometer
B.An anemometer
C.A sling psychrometer
D.A pyrometer

4.單項選擇題Which channel and mode should be used when initiating a distress alert transmission（）.

A.Channel 6 DSC
B.Channel 6 Radiotelephony
C.Channel 13 Radiotelephony and channel 16 DSC
D.Channel 70 DSC