单项选择题
All of the following are distress signals EXCEPT（）.
A.the continuous sounding of any fog signal apparatus
B.giving five or more short and rapid blasts of the whistle
C.firing a gun at intervals of about a minute
D.a barrel with burning oil in it，on deck
点击查看答案&解析
相关考题
-
单项选择题
All of the following are distress signals under the Rules EXCEPT（）.
A.a green star signal
B.orange-colored smoke
C.red flares
D.the repeated raising and lowering of outstretched arms -
单项选择题
What is NOT a distress signal?（）.
A.Red flares or red rockets
B.Continuous sounding of fog signaling apparatus
C.International Code Flags November and Charlie
D.Basket hanging in the rigging -
单项选择题
What would NOT be a distress signal?（）.
A.MAYDAY sent by radiotelephone
B.Continuous sounding of fog horn
C.Green star shells fired from a launcher
D.Square flag and ball in a vertical line
