A.floors
B.intercostals
C.stringers
D.tank top supports
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A.prevent stress concentration in the bulwark
B.permit easy jettison of deck cargo in an emergency
C.provide opening through the bulwarks for mooring lines
D.allow water shipped on deck to flow off rapidly
A.oil from flowing out of the tank vent
B.air from entering the tank vent
C.vapors from leaving the tank vent
D.flames on deck from entering the tank vent
A.any certificated tankerman
B.the master of the vessel
C.the officer of the watch
D.the person designated as person in charge
A.to the top to expel all vapors from the tanks
B.to the top so the operator is certain how much fuel he has aboard
C.with only sufficient fuel for the planned trip so excess gasoline is not carried
D.to near the top with some space allowed for gasoline expansion
A.deep tanks/lower holds
B.lower holds/tweendecks
C.tweendecks/deep tanks
D.deep tanks/tweendecks
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In the Northern hemisphere northerly winds may cause temperature（）.
When steering by autopilot,how often should the steering be checked?（）
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
When the wave period and the apparent rolling period are the same（）.
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（）.
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ECDIS must be able to perform all of the following EXCEPT（）.
Which of the following is not an operation mode of AIS?（）
The company should establish and maintain procedures to control all documents and date which are relevant to（）.