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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 航海仪器 > 航海仪器使用说明书

单项选择题

A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.

A.beam
B.radar
C.light beacon
D.reflector

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单项选择题
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.

A.Straight line
B.Arc
C.Parabola
D.Hyperbola
单项选择题
A radar display which is oriented，so that north is always at the top of the screen，is called a(n)（）.

A.relative display
B.composite display
C.stabilized display
D.unstabilized display
单项选择题
A radar display in which North is always at the top of the screen is a(n)（）.

A.unstabilized display
B.stabilized display
C.composition display
D.relative display
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