A.a vessel arrives at a port in a evening
B.a vessel leaves a port in a evening
C.a vessel arrives at a port in a morning
D.a vessel leaves a port in a morning
您可能感興趣的試卷
你可能感興趣的試題
A.by
B.with
C.on
D.in
A.cable areas
B.dumping grounds
C.fish trap areas
D.precautionary areas
A.the period of darkness exceeds the period of light
B.there is only a partial eclipse of the light
C.the periods of light and darkness are equal
D.the period of light exceeds the period of darkness
A.After boarding the pilot
B.After the pilot leaving the ship
C.After the pilot going on board
D.After taking the pilot
A.high barometric pressure
B.jet stream
C.storm surge
D.torrential rains
最新試題
The period at high or low tide during which there is no change in the height of the water is called the （）.
Above-normal tides near the center of a hurricane maybe caused by the （）.
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
An occulting light is one in which （）.
On a voyage from Capetown to London，the favorable ocean current off the coast of Africa is the （）.
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
Clearance gauges at bridges indicate （）.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
The height of tide is the （）.
The height of a light is measured from which reference plane?（）