A.Free communication
B.Free fensity
C.Free surface
D.Negative GM
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A.turn on
B.turn off
C.shut up
D.close
A.transpored to the ships side
B.transported into the shed
C.lashed and secured
D.delivered to the consignor
A.they are not subjected to cause trouble
B.they are difficult to handle this kind of cargo
C.the efficiency of separating is raised
D.the efficiency of loading is greater
A.The first line at the bottom
B.The second line from the bottom
C.The third line from the bottom
D.The fourth line from the bottom
A.The breath of the tank
B.The length of the tank
C.The amount of liquid in the tank
D.The position of the tank in relation to the center line of the vessel
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The helm command PORT TWENTY means（）.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
The circulation around a low pressure center in the Northern Hemisphere is（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
What is it called when it is possible to ignite the vapour above the oil?（）
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
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（）.
Bales close to the deckhead should be covered to prevent（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.