單項(xiàng)選擇題The phrase when built in the certificate of vessel’s nationality definitely means（）.
A.when was your vessel built
B.at what time is your vessel building
C.when is your vessel built
D.at what time you built your vessel
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1.單項(xiàng)選擇題The port in which crew or passengers go on board the ship is called（）.
A.port of call
B.port of embarkation
C.port of destination
D.port of disembarkation
2.單項(xiàng)選擇題The principal purpose of adjustment of the magnetic compass is to eliminate（）as far as possible.
A.variation
B.compass error
C.deviation
D.earth's magnetic force
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ECDIS must be able to perform all of the following EXCEPT（）.
題型：單項(xiàng)選擇題
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
題型：單項(xiàng)選擇題
The mean draft of a ship is the draft（）.
題型：單項(xiàng)選擇題
In the Northern hemisphere northerly winds may cause temperature（）.
題型：單項(xiàng)選擇題
According to the relevant regulation, lifeboat should be powered by（）.
題型：單項(xiàng)選擇題