单项选择题
DO NOT，REPEAT，NOT OVER-TAKE means that you should（）.
A.overtake
B.not overtake
C.overtake or not
D.decide if you should overtake
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单项选择题
By regulation，you MUST keep a record of the use of your radiotelephone for at least（）.
A.one month
B.four months
C.six months
D.one year -
单项选择题
Automatic identification systems (AIS) are required to（）.
A.provide safety-related information automatically to shore stations，other vessels and aircraft
B.receive safety-related information automatically from similarly equipped vessels
C.exchange safety-related information with shore-based facilities
D.All of the above -
单项选择题
Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT（）.
A.navigation status
B.ship's heading
C.port of origin
D.time stamp
