單項(xiàng)選擇題The term of Landfall means().

A.Land first sighted when vessel approaching from seaward
B.Land last sighted when vessel leaving from a port
C.In sight of one another when vessel underway
D.In sight of an island during a ship on her voyage


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1.單項(xiàng)選擇題Preferred channel marks are colored with().

A.black and green bands
B.red and green bands
C.red and yellow bands
D.yellow and green bands

2.單項(xiàng)選擇題Preferred channel marks are aids to navigation which all following marks other than().

A.channel junctions
B.bifurcations
C.fishing traps
D.wrecks or obstructions

3.單項(xiàng)選擇題In the absence of a route leading from seaward,the conventional direction of buoyage generally follows().

A.an anti-clockwise direction around land masses
B.a clockwise direction around land masses
C.an anticlockwise direction around sea masses
D.a clockwise direction around sea masses

4.單項(xiàng)選擇題In regions where ice conditions prevail in the winter,().

A.the lantern panes of unattended lights may not become covered with ice or snow
B.the lantern panes of unattended lights may become covered with ice or snow
C.ice or snow is likely caused colored
D.the white lights are likely caused to appear colored

5.單項(xiàng)選擇題A vessel shall not().

A.enter the traffic separation zone in an emergency
B.cross a traffic lane
C.engage in fishing in the separation zone
D.proceed in an inappropriate traffic lane