A.good towing ground
B.good holding ground
C.good grabbing ground
D.good dragging ground
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A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fule with a nonflammable surface
A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
A.directly on flames
B.at room temperature
C.in an extremely cold climate
D.None of the above
A.to right the raft if it capsizes
B.to carry the raft around on deck
C.for crewmen to hang on to
D.to hang the raft for drying
A.more
B.not so much
C.rather
D.not shch
最新試題
Before any loading takes place any signs of the previous cargo should do（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
According to the relevant regulation, lifeboat should be powered by（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
（）is on the panel of radar.
What is a CORRECT reply to a pilot’s request, How’s your heading?（）
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.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
Manoeuvring information can not be obtained from（）.