A.RCC
B.OSC
C.CSS
D.GPS
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A.has left already
B.left already
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最新試題
When should the emergency position-indicating radiobeacon be activated after abandoning a ship?（）
Automatic identification systems (AIS) are required to（）.
Which of the following statements is TRUE regarding automatic identification systems (AIS)? （）
Routine radio communications should be no more than（）.
Which of the following statements is TRUE regarding automatic identification systems (AIS) ?（）
Shall we（）wait at the roadstead till there is a free berth for us?
The following（）is a standard phrase.
By regulation，you MUST keep a record of the use of your radiotelephone for at least（）.
PORT A BIT SLUGGISH means that port rudder（）.
The range of a SSB transmission is MOST affected by（）.