单项选择题
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
点击查看答案&解析
相关考题
-
单项选择题
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 -
单项选择题
A sailing vessel shall not impede the safe passage of a（）．
A.power-driven vessel following a traffic lane
B.pilot vessel enroute to a pilot station
C.law enforcement vessel
D.All of the above -
单项选择题
（）is not a type of IALA maritime buoyage system.
A.special marks
B.isolated danger marks
C.cardinal marks
D.fore and aft marks
