A.flat
B.up
C.upright
D.vertical
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A.on port side
B.on starboard side
C.at the port quarter
D.at the stern
A.the poor visibility
B.the good night
C.the fast speed
D.the good sight
A.the poor visibility
B.the fog signals
C.the fast speed
D.the good sight
A.on
B.at
C.in
D.to
A.even keel
B.even trim
C.even draught
D.even float
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（）is where the crew eat their meals.
The dew point temperature is（）.
Which of the following is not an operation mode of AIS?（）
It is dangerous for vessels without the operational radar（）the estuary.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
What is a CORRECT reply to a pilot’s request, How’s your heading?（）
A tide is called diurnal when（）.
The mean draft of a ship is the draft（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.