A.Distress
B.Safety
C.All clear
D.Urgency
您可能感興趣的試卷
你可能感興趣的試題
A.a ship is threatened by grave and imminent danger and requests immediate assistance
B.a calling station has an urgent message about the safety of a person
C.the message following the prefix will be about the safety of navigation
D.the message following is a meteorological warning
A.is 50% water saturated
B.is 90% water saturated
C.temperature is greater than the dew point temperature
D.temperature is equal to,or below the dew point temperature
A.in doubt that another vessel is taking sufficient action to avoid a collision
B.altering course to starboard
C.altering course to port
D.the stand-on vessel and will maintain course and speed
A.SOS three times
B.Additional transmissions to aid direction finding
C.E for one minute,followed by T for one minute
D.Two tones,10-15 seconds each
A.Pan-Pan (3 times)
B.Securite Securite Securite
C.TTT TTT TTT
D.No special prefix
最新試題
What is the normal length of anchor cable used to anchor a vessel?()
What are symptom(s) of a ruptured appendix?()
We have no steel wire.You had better()us one.
In radiotelephone communications,the prefix PAN-PAN indicates that().
What is required to launch a boat stowed in a crescent davit?()
Which is NOT a distress signal?()
Tripping defects in anchors frequently occur in().
The expression FIRST MAGNITUDE is usually used to refer only to bodies of magnitude().
The two main types of load cells used in mooring tension gauges are().
What is the primary purpose of a splint applied in first aid?()