A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fule with a nonflammable surface
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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
A.anchoring
B.mooring
C.sewing
D.splicing
最新試題
Which of the following is not a form of precipitation?（）
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
It is dangerous for vessels without the operational radar（）the estuary.
The circulation around a low pressure center in the Northern Hemisphere is（）.
A tide is called diurnal when（）.
When the wave period and the apparent rolling period are the same（）.
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（）.