A.to
B.for
C.at
D.on
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最新試題
（）is on the panel of radar.
Full details of all lights and fog signals are shown on（）.
ECDIS must be able to perform all of the following EXCEPT（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
The circulation around a low pressure center in the Northern Hemisphere is（）.
Which of the following is not an operation mode of AIS?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
It is dangerous for vessels without the operational radar（）the estuary.
When the wave period and the apparent rolling period are the same（）.