A.hydrography
B.aids to navigation
C.tidal currents
D.regulatory boundaries
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A.Bending moment
B.local strength
C.shear force
D.displacement
A.foul of anchor
B.dropping anchor
C.weighing anchor
D.walking back anchor
A.The marine sextant
B.The chronometer
C.The echo sounder
D.The radar
A.are tracked on reciprocal bearings
B.are tracked at the same range
C.are tracked on the same bearing
D.pass closely to each other
A.the vapor and air mixture is too rich
B.it is mixed with certain proportions of air
C.the vapor is too little compared to the air
D.it is of heavy toxicity
最新試題
In the Northern hemisphere northerly winds may cause temperature（）.
（）is on the panel of radar.
The helm command PORT TWENTY means（）.
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.
The mean draft of a ship is the draft（）.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Manoeuvring information can not be obtained from（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
（）is where the crew eat their meals.