單項(xiàng)選擇題What is the tide（）.
A.do
B.to do
C.doing
D.to doing
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1.單項(xiàng)選擇題What method of extinguishing fire in a hatch is the best to minimize damages to the cargoes?（）.
A.Foam
B.CO2
C.Water
D.All of the above
2.單項(xiàng)選擇題When a pushing vessel and a vessel（）ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel.
A.is pushed
B.being pushed
C.was pushed
D.be pushed
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The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
題型：?jiǎn)雾?xiàng)選擇題
The helm command PORT TWENTY means（）.
題型：?jiǎn)雾?xiàng)選擇題
When steering by autopilot,how often should the steering be checked?（）
題型：?jiǎn)雾?xiàng)選擇題
Which of the following is not an operation mode of AIS?（）
題型：?jiǎn)雾?xiàng)選擇題
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
題型：?jiǎn)雾?xiàng)選擇題