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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

When two vessels are in immediate danger of collision，the stand-on vessel must（）.

A.abandon ship
B.assist in taking whatever action is necessary to avoid collision
C.hold course and speed
D.sound a distress signal