單項選擇題0ur jumbo boom can（）20 tons.
A.lift
B.rise
C.elevate
D.hoist
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1.單項選擇題0ur ship（）with many modern navigational instruments.
A.equipped
B.is equipped
C.equips
D.has equipped
2.單項選擇題Permission is kindly requested（）the ballast water.
A.pump out
B.to pump out
C.pumpin out
D.be pumped out
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When the wave period and the apparent rolling period are the same（）.
題型：單項選擇題
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
題型：單項選擇題
A tide is called diurnal when（）.
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Full details of all lights and fog signals are shown on（）.
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The helm command PORT TWENTY means（）.
題型：單項選擇題