单项选择题
A.a commercial ship-to-ship channel B.the last frequency that was used C.the distress and calling frequency D.the radio only if expecting a call
When you are firing a pyrotechnic distress signal，it sh...
单项选择题When you are firing a pyrotechnic distress signal，it should be aimed（）.
A.horizontally and directly abeam of your vessel B.at the vessel whose attention you want to attract C.into the wind D.at greater than 60 degrees above the horizon
When two vessels are in immediate danger of collision，t...
单项选择题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
What is NOT a distress signal?（）A.Red flares or red roc...
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
