单项选择题
A.is changing clockwise in direction B.is changing anticlockwise in direction C.is changing cyclonically or variably in direction D.remains unchanged in direction at the time
When a feature remains in its existing charted position...
单项选择题When a feature remains in its existing charted position but has a change of characteristic,（）command is used on a chart.
A.MOVE B.DELETE C.AMEND D.SUBSTITUTE
Any action to avoid collision shall,if the circumstance...
单项选择题Any action to avoid collision shall,if the circumstances of the case admit,（）,made in ample time and with due regard to the observance of good seamanship.
A.be initiative B.be positive C.be negative D.be positively
Which one of the followings is not required on survival...
单项选择题Which one of the followings is not required on survival crafts?（）
A.Anti-seasickness medicine B.Immersion suits C.Axes D.Lifebuoys
