A.in
B.up
C.out
D.down
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最新試題
A tide is called diurnal when（）.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
Which of the following is not a form of precipitation?（）
Which of the following is not an operation mode of AIS?（）
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
Bales close to the deckhead should be covered to prevent（）.
According to the relevant regulation, lifeboat should be powered by（）.
It is dangerous for vessels without the operational radar（）the estuary.