A.stop
B.to stop
C.stopping
D.stopped
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A.at
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A.by grade
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C.by the grade
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最新試題
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
When the wave period and the apparent rolling period are the same（）.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
It is dangerous for vessels without the operational radar（）the estuary.
The helm command PORT TWENTY means（）.
Full details of all lights and fog signals are shown on（）.
A tide is called diurnal when（）.
What is it called when it is possible to ignite the vapour above the oil?（）
According to the relevant regulation, lifeboat should be powered by（）.
When steering by autopilot,how often should the steering be checked?（）