A.used to measure the speed of wind
B.in which the pressure of air is measured
C.that tells which dirction a storm is coming from
D.used to measure the height of waves
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A.a boat bucket
B.an air tank filled with water
C.an oar and canvas weighted down
D.All of the above
A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above
A.fairlead
B.heaving line
C.stay
D.warp
A.the floating-free method only
B.breaking the weak link on the painter
C.throwing the entire container overboard and then pulling an the operating
D.removing the securing straps
A.pulling a cord
B.cutting the wire restraining bands
C.removing the rudder packing strip
D.throwing the entire container overboard
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Fog is likely to occur when there is little difference between the dew point and the（）.
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It is dangerous for vessels without the operational radar（）the estuary.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
What is a CORRECT reply to a pilot’s request, How’s your heading?（）
（）is on the panel of radar.
What is it called when it is possible to ignite the vapour above the oil?（）
The mean draft of a ship is the draft（）.
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