单项选择题
Information from the stations and installations shall be appropriatelysharedby（）.
A.all crew members B.all the watchkeeping personnel C.all passengers D.all visitors
单项选择题 The only cylindrical chart projection widely used for navigation is the（）.
单项选择题 The notice which is based on original information is indicatedby（）nexttothenotice number.
单项选择题 What areessentialto ensure the effective implementationoftheship securityplan?（）
