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
Bales close to the deckhead should be covered to prevent（）.
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
Which of the following is not an operation mode of AIS?（）
In the Northern hemisphere northerly winds may cause temperature（）.
It is dangerous for vessels without the operational radar（）the estuary.
Berthing means bringing a vessel to her berth until（）.
Full details of all lights and fog signals are shown on（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.