A.blind flange
B.pivot coupling
C.quick-release coupling
D.spectacle flange
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A.increase the lifting capacity
B.increase the lifting radius
C.protect the slings
D.protect the upper part of a load
A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
A.pressed
B.slack
C.inertial
D.elemental
A.Bagged cargo
B.Bulk grain
C.Bulk rice
D.Refrigerated goods
A.increase reserve buoyancy
B.decrease the righting moment
C.decrease KG
D.increase KM
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Bales close to the deckhead should be covered to prevent（）.
A tide is called diurnal when（）.
Manoeuvring information can not be obtained from（）.
It is dangerous for vessels without the operational radar（）the estuary.
The circulation around a low pressure center in the Northern Hemisphere is（）.
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
ECDIS must be able to perform all of the following EXCEPT（）.
Full details of all lights and fog signals are shown on（）.
Which of the following is not a form of precipitation?（）