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
What is it called when it is possible to ignite the vapour above the oil?（）
Manoeuvring information can not be obtained from（）.
Before any loading takes place any signs of the previous cargo should do（）.
The loading of the ship must be done in accordance with（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
（）is where the crew eat their meals.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
Full details of all lights and fog signals are shown on（）.
Which of the following is not a form of precipitation?（）