单项选择题
On completion of corrections of all notices from a NM, mark（）on the front cover page of the NM with the same.
A.ENTERING B.ENTERED C.COMPLETED D.CORRECTED
单项选择题 When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?（）
单项选择题 Electronic Chart Display and Information system can assist the mariner in（）.
单项选择题 When you doubt the existence of risk of collision,（）.
