单项选择题

A.Vessels nearer the distress vessel acknowledge receip……

Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.

A.Vessels nearer the distress vessel acknowledge receipt
B.Vessels nearer the distress vessel fail to acknowledge receipt
C.Even you have not reveived the distress
D.Even the vessel in distress expressly prohibit you from providing any salvage service

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单项选择题If you are transmitting a distress message by radiotelephone you should（）.

A.use English language
B.always use the International Code
C.preface it by the word SOS
D.follow the transmission with the radio alarm signal

单项选择题A person who sees someone fall overboard should（）.

A.call for help and keep the individual in sight
B.run to the radio room to send an emergency message
C.immediately jump in the water to assist the individual
D.go to the bridge to report the captain

单项选择题（）is the most visible signal of distress from a lifeboat at sea in the daytime.

A.Smoke signal
B.Flash signal
C.Fire signal
D.Radio emergency transmission

单项选择题Which signal is recognized as a distress signal?（）.

A.Directing the beam of a searchlight at another vessel
B.A smoke signal giving off orange colored smoke
C.A whistle signal of one prolonged and three short blasts
D.International Code Signal PAN spoken over the radiotelephone

单项选择题A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECTED TO A RCC GIVING POSITION，IDENTIFICATION，COURSE AND SPEED OF THE VESSEL AS WELL AS THE NATURE OF DISTRESS is known as（）.

A.Distress alert
B.Safety alert
C.Emergency alert
D.General alert