單項選擇題The officer of the watch should（）comply with the collision rules.
A.some times
B.often
C.at all times
D.seldom
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1.單項選擇題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
2.單項選擇題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
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（）is on the panel of radar.
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