A.close
B.open
C.switch off
D.switch on
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A.close up
B.switch on
C.open
D.switch off
A.switch on
B.switch off
C.close
D.open
A.invisible
B.it is invisible
C.isn't visible
D.unvisible
A.repairing
B.to repair
C.repairs
D.have repaired
A.tide is falling from high water to low water
B.tide is rising from low water to high water
C.tide is reaching to a highest level
D.tide is reaching to a lowest level
最新試題
When the wave period and the apparent rolling period are the same（）.
Berthing means bringing a vessel to her berth until（）.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
（）is on the panel of radar.
When steering by autopilot,how often should the steering be checked?（）
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Which of the following is not a form of precipitation?（）
According to the relevant regulation, lifeboat should be powered by（）.
It is dangerous for vessels without the operational radar（）the estuary.
Which of the following is not an operation mode of AIS?（）