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

相关考题

Which signal is recognized as a distress signal?（）.A.Di...

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

A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY D...

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

You receive a call from the MSA OF CHINA addressed to a...

单项选择题You receive a call from the MSA OF CHINA addressed to all stations. The call begins with the words Pan-Pan (3 times). Which type of emergency signal would this be?（）.

A.Safety signal
B.Urgency signal
C.Distress signal
D.Red alert signal

遇险用语

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